22257188 has 6 divisors (see below), whose sum is σ = 38950086. Its totient is φ = 11128592.

The previous prime is 22257149. The next prime is 22257203. The reversal of 22257188 is 88175222.

It can be written as a sum of positive squares in only one way, i.e., 21086464 + 1170724 = 4592^2 + 1082^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2782145 + ... + 2782152.

It is an arithmetic number, because the mean of its divisors is an integer number (6491681).

Almost surely, 2^22257188 is an apocalyptic number.

It is an amenable number.

22257188 is a deficient number, since it is larger than the sum of its proper divisors (16692898).

22257188 is a wasteful number, since it uses less digits than its factorization.

22257188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5564301 (or 5564299 counting only the distinct ones).

The product of its digits is 17920, while the sum is 35.

The square root of 22257188 is about 4717.7524309781. The cubic root of 22257188 is about 281.2916008916.

The spelling of 22257188 in words is "twenty-two million, two hundred fifty-seven thousand, one hundred eighty-eight".