17312872 has 16 divisors (see below), whose sum is σ = 32632740. Its totient is φ = 8610816.

The previous prime is 17312863. The next prime is 17312879. The reversal of 17312872 is 27821371.

It can be written as a sum of positive squares in 2 ways, for example, as 14333796 + 2979076 = 3786^2 + 1726^2 .

It is not an unprimeable number, because it can be changed into a prime (17312879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4063 + ... + 7150.

Almost surely, 2^17312872 is an apocalyptic number.

It is an amenable number.

17312872 is a deficient number, since it is larger than the sum of its proper divisors (15319868).

17312872 is a wasteful number, since it uses less digits than its factorization.

17312872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11412 (or 11408 counting only the distinct ones).

The product of its digits is 4704, while the sum is 31.

The square root of 17312872 is about 4160.8739466607. The cubic root of 17312872 is about 258.6959954817.

The spelling of 17312872 in words is "seventeen million, three hundred twelve thousand, eight hundred seventy-two".