172157692 has 12 divisors (see below), whose sum is σ = 344315440. Its totient is φ = 73781856.

The previous prime is 172157683. The next prime is 172157701. The reversal of 172157692 is 296751271.

It is an interprime number because it is at equal distance from previous prime (172157683) and next prime (172157701).

172157692 is an admirable number.

It is a congruent number.

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, 3074217 + ... + 3074272.

Almost surely, 2^172157692 is an apocalyptic number.

It is an amenable number.

172157692 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

172157692 is a wasteful number, since it uses less digits than its factorization.

172157692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6148500 (or 6148498 counting only the distinct ones).

The product of its digits is 52920, while the sum is 40.

The square root of 172157692 is about 13120.8876224134. The cubic root of 172157692 is about 556.2996805857.

The spelling of 172157692 in words is "one hundred seventy-two million, one hundred fifty-seven thousand, six hundred ninety-two".