172319216 has 20 divisors (see below), whose sum is σ = 334273992. Its totient is φ = 86054976.

The previous prime is 172319209. The next prime is 172319233. The reversal of 172319216 is 612913271.

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, 8030 + ... + 20226.

Almost surely, 2^172319216 is an apocalyptic number.

172319216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

172319216 is a deficient number, since it is larger than the sum of its proper divisors (161954776).

172319216 is a wasteful number, since it uses less digits than its factorization.

172319216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13088 (or 13082 counting only the distinct ones).

The product of its digits is 4536, while the sum is 32.

The square root of 172319216 is about 13127.0414031495. The cubic root of 172319216 is about 556.4736057457.

The spelling of 172319216 in words is "one hundred seventy-two million, three hundred nineteen thousand, two hundred sixteen".