22864524 has 72 divisors (see below), whose sum is σ = 59828160. Its totient is φ = 6776064.

The previous prime is 22864493. The next prime is 22864529. The reversal of 22864524 is 42546822.

It is not an unprimeable number, because it can be changed into a prime (22864529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65719 + ... + 66065.

Almost surely, 2^22864524 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22864524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29914080).

22864524 is an abundant number, since it is smaller than the sum of its proper divisors (36963636).

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

22864524 is a wasteful number, since it uses less digits than its factorization.

22864524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407 (or 388 counting only the distinct ones).

The product of its digits is 30720, while the sum is 33.

The square root of 22864524 is about 4781.6863134254. The cubic root of 22864524 is about 283.8272274543.

The spelling of 22864524 in words is "twenty-two million, eight hundred sixty-four thousand, five hundred twenty-four".