172889684 has 12 divisors (see below), whose sum is σ = 330062208. Its totient is φ = 78586200.

The previous prime is 172889671. The next prime is 172889693. The reversal of 172889684 is 486988271.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1964612 + ... + 1964699.

It is an arithmetic number, because the mean of its divisors is an integer number (27505184).

Almost surely, 2^172889684 is an apocalyptic number.

It is an amenable number.

172889684 is a deficient number, since it is larger than the sum of its proper divisors (157172524).

172889684 is a wasteful number, since it uses less digits than its factorization.

172889684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3929326 (or 3929324 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 53.

The square root of 172889684 is about 13148.7521841428. The cubic root of 172889684 is about 557.0870036116.

The spelling of 172889684 in words is "one hundred seventy-two million, eight hundred eighty-nine thousand, six hundred eighty-four".