22530865 has 32 divisors (see below), whose sum is σ = 34456320. Its totient is φ = 13768704.

The previous prime is 22530857. The next prime is 22530877. The reversal of 22530865 is 56803522.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22530865 - 2³ = 22530857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10309 + ... + 12301.

It is an arithmetic number, because the mean of its divisors is an integer number (1076760).

Almost surely, 2^22530865 is an apocalyptic number.

It is an amenable number.

22530865 is a deficient number, since it is larger than the sum of its proper divisors (11925455).

22530865 is a wasteful number, since it uses less digits than its factorization.

22530865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 22530865 is about 4746.6688319283. The cubic root of 22530865 is about 282.4398389133.

The spelling of 22530865 in words is "twenty-two million, five hundred thirty thousand, eight hundred sixty-five".