172864808 has 16 divisors (see below), whose sum is σ = 329616000. Its totient is φ = 84967216.

The previous prime is 172864807. The next prime is 172864841. The reversal of 172864808 is 808468271.

172864808 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (172864807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182648 + ... + 183591.

It is an arithmetic number, because the mean of its divisors is an integer number (20601000).

Almost surely, 2^172864808 is an apocalyptic number.

It is an amenable number.

172864808 is a deficient number, since it is larger than the sum of its proper divisors (156751192).

172864808 is a wasteful number, since it uses less digits than its factorization.

172864808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366304 (or 366300 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 44.

The square root of 172864808 is about 13147.8062048389. The cubic root of 172864808 is about 557.0602837583.

The spelling of 172864808 in words is "one hundred seventy-two million, eight hundred sixty-four thousand, eight hundred eight".