79647172 has 24 divisors (see below), whose sum is σ = 153457920. Its totient is φ = 35868960.

The previous prime is 79647131. The next prime is 79647173. The reversal of 79647172 is 27174697.

It is not an unprimeable number, because it can be changed into a prime (79647173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3508 + ... + 13099.

It is an arithmetic number, because the mean of its divisors is an integer number (6394080).

Almost surely, 2^79647172 is an apocalyptic number.

It is an amenable number.

79647172 is a deficient number, since it is larger than the sum of its proper divisors (73810748).

79647172 is a wasteful number, since it uses less digits than its factorization.

79647172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16731 (or 16729 counting only the distinct ones).

The product of its digits is 148176, while the sum is 43.

The square root of 79647172 is about 8924.5264300130. The cubic root of 79647172 is about 430.2525503975.

The spelling of 79647172 in words is "seventy-nine million, six hundred forty-seven thousand, one hundred seventy-two".