22903812 has 18 divisors (see below), whose sum is σ = 57895838. Its totient is φ = 7634592.

The previous prime is 22903799. The next prime is 22903813. The reversal of 22903812 is 21830922.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22810176 + 93636 = 4776^2 + 306^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (22903813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 318073 + ... + 318144.

Almost surely, 2^22903812 is an apocalyptic number.

It is an amenable number.

22903812 is an abundant number, since it is smaller than the sum of its proper divisors (34992026).

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

22903812 is a wasteful number, since it uses less digits than its factorization.

22903812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636227 (or 636222 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 22903812 is about 4785.7927243039. The cubic root of 22903812 is about 283.9897007440.

The spelling of 22903812 in words is "twenty-two million, nine hundred three thousand, eight hundred twelve".