22657028 has 6 divisors (see below), whose sum is σ = 39649806. Its totient is φ = 11328512.

The previous prime is 22657009. The next prime is 22657043. The reversal of 22657028 is 82075622.

It can be written as a sum of positive squares in only one way, i.e., 16144324 + 6512704 = 4018^2 + 2552^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22656985 and 22657003.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2832125 + ... + 2832132.

It is an arithmetic number, because the mean of its divisors is an integer number (6608301).

Almost surely, 2^22657028 is an apocalyptic number.

It is an amenable number.

22657028 is a deficient number, since it is larger than the sum of its proper divisors (16992778).

22657028 is a wasteful number, since it uses less digits than its factorization.

22657028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5664261 (or 5664259 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 22657028 is about 4759.9399155872. The cubic root of 22657028 is about 282.9660378695.

The spelling of 22657028 in words is "twenty-two million, six hundred fifty-seven thousand, twenty-eight".