22535920 has 40 divisors (see below), whose sum is σ = 57161520. Its totient is φ = 8194560.

The previous prime is 22535893. The next prime is 22535951. The reversal of 22535920 is 2953522.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11925 + ... + 13684.

It is an arithmetic number, because the mean of its divisors is an integer number (1429038).

Almost surely, 2^22535920 is an apocalyptic number.

22535920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22535920 is an abundant number, since it is smaller than the sum of its proper divisors (34625600).

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

22535920 is a wasteful number, since it uses less digits than its factorization.

22535920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25633 (or 25627 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 22535920 is about 4747.2012807548. The cubic root of 22535920 is about 282.4609599639.

The spelling of 22535920 in words is "twenty-two million, five hundred thirty-five thousand, nine hundred twenty".