22857232 has 20 divisors (see below), whose sum is σ = 44378236. Its totient is φ = 11404800.

The previous prime is 22857229. The next prime is 22857253. The reversal of 22857232 is 23275822.

It can be written as a sum of positive squares in 2 ways, for example, as 14470416 + 8386816 = 3804^2 + 2896^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22857194 and 22857203.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8428 + ... + 10804.

Almost surely, 2^22857232 is an apocalyptic number.

It is an amenable number.

22857232 is a deficient number, since it is larger than the sum of its proper divisors (21521004).

22857232 is a wasteful number, since it uses less digits than its factorization.

22857232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2986 (or 2980 counting only the distinct ones).

The product of its digits is 13440, while the sum is 31.

The square root of 22857232 is about 4780.9237601116. The cubic root of 22857232 is about 283.7970513293.

The spelling of 22857232 in words is "twenty-two million, eight hundred fifty-seven thousand, two hundred thirty-two".