172320088 has 16 divisors (see below), whose sum is σ = 334242000. Its totient is φ = 83188896.

The previous prime is 172320073. The next prime is 172320097. The reversal of 172320088 is 880023271.

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, 371148 + ... + 371611.

It is an arithmetic number, because the mean of its divisors is an integer number (20890125).

Almost surely, 2^172320088 is an apocalyptic number.

It is an amenable number.

172320088 is a deficient number, since it is larger than the sum of its proper divisors (161921912).

172320088 is a wasteful number, since it uses less digits than its factorization.

172320088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742794 (or 742790 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 172320088 is about 13127.0746169891. The cubic root of 172320088 is about 556.4745443993.

The spelling of 172320088 in words is "one hundred seventy-two million, three hundred twenty thousand, eighty-eight".