22986 has 12 divisors (see below), whose sum is σ = 49842. Its totient is φ = 7656.

The previous prime is 22973. The next prime is 22993. The reversal of 22986 is 68922.

It can be written as a sum of positive squares in only one way, i.e., 18225 + 4761 = 135^2 + 69^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 621 + ... + 656.

2²²⁹⁸⁶ is an apocalyptic number.

22986 is an abundant number, since it is smaller than the sum of its proper divisors (26856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22986 is a wasteful number, since it uses less digits than its factorization.

22986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285 (or 1282 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 22986 is about 151.6113452219. The cubic root of 22986 is about 28.4328984625.

It can be divided in two parts, 2298 and 6, that added together give a square (2304 = 48²).

The spelling of 22986 in words is "twenty-two thousand, nine hundred eighty-six".