172072236 has 48 divisors (see below), whose sum is σ = 459599616. Its totient is φ = 49084224.

The previous prime is 172072141. The next prime is 172072247. The reversal of 172072236 is 632270271.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68230 + ... + 70706.

It is an arithmetic number, because the mean of its divisors is an integer number (9574992).

Almost surely, 2^172072236 is an apocalyptic number.

It is an amenable number.

172072236 is an abundant number, since it is smaller than the sum of its proper divisors (287527380).

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

172072236 is a wasteful number, since it uses less digits than its factorization.

172072236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318 (or 3316 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 172072236 is about 13117.6307311953. The cubic root of 172072236 is about 556.2076196134.

The spelling of 172072236 in words is "one hundred seventy-two million, seventy-two thousand, two hundred thirty-six".