22997090 has 16 divisors (see below), whose sum is σ = 43830072. Its totient is φ = 8657664.

The previous prime is 22997077. The next prime is 22997111. The reversal of 22997090 is 9079922.

It can be written as a sum of positive squares in 4 ways, for example, as 16345849 + 6651241 = 4043^2 + 2579^2 .

It is a super-2 number, since 2×22997090² = 1057732296936200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67469 + ... + 67808.

Almost surely, 2^22997090 is an apocalyptic number.

22997090 is a deficient number, since it is larger than the sum of its proper divisors (20832982).

22997090 is a wasteful number, since it uses less digits than its factorization.

22997090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135301.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 22997090 is about 4795.5281252434. The cubic root of 22997090 is about 284.3747037794.

The spelling of 22997090 in words is "twenty-two million, nine hundred ninety-seven thousand, ninety".