28

Four times seven

Twenty-eight, the number between 27 and 29.

A perfect number in mathematics—the sum of its divisors (1, 2, 4, 7, 14) equals itself.

The standard length of February in common years.

In the lunar cycle, roughly the number of days between full moons.

She turns 28 next month.

calendar

days

Twenty-four-hour spans

  • FebruarySecond month, often shortest
  • monthYear's twelfth part
  • cycleRepeating sequence of events

periodicity · weeks · fortnight · biweekly · duration · countdown

mathematics

composite

Made of distinct parts

factors · equation · calculation · digit · numeral · arithmetic · multiplication · division

age

twenty-eight

Number following twenty-seven

milestone · maturation · development · growth · experience · generation · youth · birthday · coming-of-age

games

dominoes

Dot-marked game tiles

gambling · casino · hand · score · bust · hit · stand · pips · tiles · double-six

numerology

vibration

Rapid oscillating movement

mysticism · esoteric · divination · spiritual · harmony · balance · symbolism · angels

Categories
Opposites
primality

2829

Integer following twenty-eight

31 · 23 · 2 · 3 · 7

perfect number status

2812

Number after eleven

18 · 20 · 8 · 9 · 10

mathematical properties

2829

Integer following twenty-eight

31 · 23 · 37 · 1 · 0

Phrases
Familiarity
Top 500,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G