172016904 has 32 divisors (see below), whose sum is σ = 431856000. Its totient is φ = 57097152.

The previous prime is 172016903. The next prime is 172016917. The reversal of 172016904 is 409610271.

It is a happy number.

172016904 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 (172016903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9259 + ... + 20730.

It is an arithmetic number, because the mean of its divisors is an integer number (13495500).

Almost surely, 2^172016904 is an apocalyptic number.

It is an amenable number.

172016904 is an abundant number, since it is smaller than the sum of its proper divisors (259839096).

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

172016904 is a wasteful number, since it uses less digits than its factorization.

172016904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30237 (or 30233 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 172016904 is about 13115.5214917288. The cubic root of 172016904 is about 556.1479946944.

The spelling of 172016904 in words is "one hundred seventy-two million, sixteen thousand, nine hundred four".