22569990 has 32 divisors (see below), whose sum is σ = 54590976. Its totient is φ = 5971680.

The previous prime is 22569973. The next prime is 22569991. The reversal of 22569990 is 9996522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22569991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1059 + ... + 6801.

It is an arithmetic number, because the mean of its divisors is an integer number (1705968).

Almost surely, 2^22569990 is an apocalyptic number.

22569990 is an abundant number, since it is smaller than the sum of its proper divisors (32020986).

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

22569990 is a wasteful number, since it uses less digits than its factorization.

22569990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5884.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 22569990 is about 4750.7883556311. The cubic root of 22569990 is about 282.6032306052.

It can be divided in two parts, 2256 and 9990, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 22569990 in words is "twenty-two million, five hundred sixty-nine thousand, nine hundred ninety".