22652720 has 20 divisors (see below), whose sum is σ = 52667760. Its totient is φ = 9061056.

The previous prime is 22652719. The next prime is 22652743. The reversal of 22652720 is 2725622.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 22652720.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141500 + ... + 141659.

It is an arithmetic number, because the mean of its divisors is an integer number (2633388).

Almost surely, 2^22652720 is an apocalyptic number.

22652720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22652720 is an abundant number, since it is smaller than the sum of its proper divisors (30015040).

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

22652720 is a wasteful number, since it uses less digits than its factorization.

22652720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283172 (or 283166 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 22652720 is about 4759.4873673538. The cubic root of 22652720 is about 282.9481023756.

The spelling of 22652720 in words is "twenty-two million, six hundred fifty-two thousand, seven hundred twenty".