172231880 has 32 divisors (see below), whose sum is σ = 389777400. Its totient is φ = 68491776.

The previous prime is 172231859. The next prime is 172231901. The reversal of 172231880 is 88132271.

It is an interprime number because it is at equal distance from previous prime (172231859) and next prime (172231901).

It can be written as a sum of positive squares in 4 ways, for example, as 119727364 + 52504516 = 10942^2 + 7246^2 .

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, 5525 + ... + 19364.

Almost surely, 2^172231880 is an apocalyptic number.

172231880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172231880 is an abundant number, since it is smaller than the sum of its proper divisors (217545520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172231880 is a wasteful number, since it uses less digits than its factorization.

172231880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25073 (or 25069 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 172231880 is about 13123.7144132292. The cubic root of 172231880 is about 556.3795779429.

The spelling of 172231880 in words is "one hundred seventy-two million, two hundred thirty-one thousand, eight hundred eighty".