172979288 has 16 divisors (see below), whose sum is σ = 328905360. Its totient is φ = 85271200.

The previous prime is 172979263. The next prime is 172979291. The reversal of 172979288 is 882979271.

It is a happy number.

172979288 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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, 151703 + ... + 152838.

It is an arithmetic number, because the mean of its divisors is an integer number (20556585).

Almost surely, 2^172979288 is an apocalyptic number.

It is an amenable number.

172979288 is a deficient number, since it is larger than the sum of its proper divisors (155926072).

172979288 is a wasteful number, since it uses less digits than its factorization.

172979288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304618 (or 304614 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 53.

The square root of 172979288 is about 13152.1590622985. The cubic root of 172979288 is about 557.1832279816.

The spelling of 172979288 in words is "one hundred seventy-two million, nine hundred seventy-nine thousand, two hundred eighty-eight".