172656268 has 48 divisors (see below), whose sum is σ = 326269440. Its totient is φ = 79704000.

The previous prime is 172656241. The next prime is 172656271. The reversal of 172656268 is 862656271.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 636973 + ... + 637243.

It is an arithmetic number, because the mean of its divisors is an integer number (6797280).

Almost surely, 2^172656268 is an apocalyptic number.

It is an amenable number.

172656268 is a deficient number, since it is larger than the sum of its proper divisors (153613172).

172656268 is a wasteful number, since it uses less digits than its factorization.

172656268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478 (or 476 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 172656268 is about 13139.8732109560. The cubic root of 172656268 is about 556.8361855185.

The spelling of 172656268 in words is "one hundred seventy-two million, six hundred fifty-six thousand, two hundred sixty-eight".