172907896 has 32 divisors (see below), whose sum is σ = 372096000. Its totient is φ = 73787616.

The previous prime is 172907893. The next prime is 172907897. The reversal of 172907896 is 698709271.

It is a happy number.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172907893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6925 + ... + 19843.

It is an arithmetic number, because the mean of its divisors is an integer number (11628000).

Almost surely, 2^172907896 is an apocalyptic number.

It is an amenable number.

172907896 is an abundant number, since it is smaller than the sum of its proper divisors (199188104).

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

172907896 is a wasteful number, since it uses less digits than its factorization.

172907896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13171 (or 13167 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 49.

The square root of 172907896 is about 13149.4447031044. Note that the first 3 decimals coincide. The cubic root of 172907896 is about 557.1065638924.

The spelling of 172907896 in words is "one hundred seventy-two million, nine hundred seven thousand, eight hundred ninety-six".