22257090 has 24 divisors (see below), whose sum is σ = 57868668. Its totient is φ = 5935200.

The previous prime is 22257089. The next prime is 22257107. The reversal of 22257090 is 9075222.

It is a happy number.

22257090 is a `hidden beast` number, since 2 + 2 + 2 + 570 + 90 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20766249 + 1490841 = 4557^2 + 1221^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 123561 + ... + 123740.

Almost surely, 2^22257090 is an apocalyptic number.

22257090 is an abundant number, since it is smaller than the sum of its proper divisors (35611578).

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

22257090 is a wasteful number, since it uses less digits than its factorization.

22257090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247314 (or 247311 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 22257090 is about 4717.7420446650. The cubic root of 22257090 is about 281.2911880419.

The spelling of 22257090 in words is "twenty-two million, two hundred fifty-seven thousand, ninety".