172891952 has 20 divisors (see below), whose sum is σ = 335825976. Its totient is φ = 86227200.

The previous prime is 172891951. The next prime is 172891967. The reversal of 172891952 is 259198271.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (172891951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7058 + ... + 19889.

Almost surely, 2^172891952 is an apocalyptic number.

It is an amenable number.

172891952 is a deficient number, since it is larger than the sum of its proper divisors (162934024).

172891952 is a wasteful number, since it uses less digits than its factorization.

172891952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27356 (or 27350 counting only the distinct ones).

The product of its digits is 90720, while the sum is 44.

The square root of 172891952 is about 13148.8384277852. The cubic root of 172891952 is about 557.0894395923.

The spelling of 172891952 in words is "one hundred seventy-two million, eight hundred ninety-one thousand, nine hundred fifty-two".