22157090 has 16 divisors (see below), whose sum is σ = 39942720. Its totient is φ = 8849520.

The previous prime is 22157089. The next prime is 22157123. The reversal of 22157090 is 9075122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7985 + ... + 10395.

It is an arithmetic number, because the mean of its divisors is an integer number (2496420).

Almost surely, 2^22157090 is an apocalyptic number.

22157090 is a deficient number, since it is larger than the sum of its proper divisors (17785630).

22157090 is a wasteful number, since it uses less digits than its factorization.

22157090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3337.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 22157090 is about 4707.1318230957. The cubic root of 22157090 is about 280.8692797593.

The spelling of 22157090 in words is "twenty-two million, one hundred fifty-seven thousand, ninety".