172898864 has 10 divisors (see below), whose sum is σ = 334991580. Its totient is φ = 86449424.

The previous prime is 172898849. The next prime is 172898881. The reversal of 172898864 is 468898271.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5403074 + ... + 5403105.

It is an arithmetic number, because the mean of its divisors is an integer number (33499158).

Almost surely, 2^172898864 is an apocalyptic number.

It is an amenable number.

172898864 is a deficient number, since it is larger than the sum of its proper divisors (162092716).

172898864 is a wasteful number, since it uses less digits than its factorization.

172898864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10806187 (or 10806181 counting only the distinct ones).

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

The square root of 172898864 is about 13149.1012620635. The cubic root of 172898864 is about 557.0968634021.

The spelling of 172898864 in words is "one hundred seventy-two million, eight hundred ninety-eight thousand, eight hundred sixty-four".