22756320 has 72 divisors (see below), whose sum is σ = 77660856. Its totient is φ = 6067968.

The previous prime is 22756301. The next prime is 22756337. The reversal of 22756320 is 2365722.

22756320 is a `hidden beast` number, since 2 + 27 + 5 + 632 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6462 + ... + 9341.

It is an arithmetic number, because the mean of its divisors is an integer number (1078623).

Almost surely, 2^22756320 is an apocalyptic number.

22756320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22756320 is an abundant number, since it is smaller than the sum of its proper divisors (54904536).

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

22756320 is a wasteful number, since it uses less digits than its factorization.

22756320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15824 (or 15813 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 22756320 is about 4770.3584770958. The cubic root of 22756320 is about 283.3787916297.

The spelling of 22756320 in words is "twenty-two million, seven hundred fifty-six thousand, three hundred twenty".