22978608 has 40 divisors (see below), whose sum is σ = 59543808. Its totient is φ = 7636032.

The previous prime is 22978603. The next prime is 22978609. The reversal of 22978608 is 80687922.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22978608.

It is not an unprimeable number, because it can be changed into a prime (22978603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22885 + ... + 23867.

Almost surely, 2^22978608 is an apocalyptic number.

It is an amenable number.

22978608 is an abundant number, since it is smaller than the sum of its proper divisors (36565200).

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

22978608 is a wasteful number, since it uses less digits than its factorization.

22978608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481 (or 1475 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 22978608 is about 4793.6007343124. The cubic root of 22978608 is about 284.2985025169.

The spelling of 22978608 in words is "twenty-two million, nine hundred seventy-eight thousand, six hundred eight".