172381288 has 16 divisors (see below), whose sum is σ = 323563680. Its totient is φ = 86097648.

The previous prime is 172381277. The next prime is 172381301. The reversal of 172381288 is 882183271.

It is a self number, because there is not a number n which added to its sum of digits gives 172381288.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3406 + ... + 18877.

It is an arithmetic number, because the mean of its divisors is an integer number (20222730).

Almost surely, 2^172381288 is an apocalyptic number.

It is an amenable number.

172381288 is a deficient number, since it is larger than the sum of its proper divisors (151182392).

172381288 is a wasteful number, since it uses less digits than its factorization.

172381288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23256 (or 23252 counting only the distinct ones).

The product of its digits is 43008, while the sum is 40.

The square root of 172381288 is about 13129.4054701651. The cubic root of 172381288 is about 556.5404144739.

The spelling of 172381288 in words is "one hundred seventy-two million, three hundred eighty-one thousand, two hundred eighty-eight".