172572832 has 12 divisors (see below), whose sum is σ = 339752826. Its totient is φ = 86286400.

The previous prime is 172572793. The next prime is 172572871. The reversal of 172572832 is 238275271.

It is an interprime number because it is at equal distance from previous prime (172572793) and next prime (172572871).

It can be written as a sum of positive squares in only one way, i.e., 159870736 + 12702096 = 12644^2 + 3564^2 .

It is a junction number, because it is equal to n+sod(n) for n = 172572791 and 172572800.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2696419 + ... + 2696482.

Almost surely, 2^172572832 is an apocalyptic number.

It is an amenable number.

172572832 is a deficient number, since it is larger than the sum of its proper divisors (167179994).

172572832 is an equidigital number, since it uses as much as digits as its factorization.

172572832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5392911 (or 5392903 counting only the distinct ones).

The product of its digits is 47040, while the sum is 37.

The square root of 172572832 is about 13136.6979108146. The cubic root of 172572832 is about 556.7464741892.

The spelling of 172572832 in words is "one hundred seventy-two million, five hundred seventy-two thousand, eight hundred thirty-two".