207172172 has 24 divisors (see below), whose sum is σ = 375626160. Its totient is φ = 99861440.

The previous prime is 207172127. The next prime is 207172211. The reversal of 207172172 is 271271702.

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 125738 + ... + 127374.

It is an arithmetic number, because the mean of its divisors is an integer number (15651090).

Almost surely, 2^207172172 is an apocalyptic number.

It is an amenable number.

207172172 is a deficient number, since it is larger than the sum of its proper divisors (168453988).

207172172 is a wasteful number, since it uses less digits than its factorization.

207172172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2761 (or 2759 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 29.

The square root of 207172172 is about 14393.4767169020. The cubic root of 207172172 is about 591.7121310123.

The spelling of 207172172 in words is "two hundred seven million, one hundred seventy-two thousand, one hundred seventy-two".