79731328 has 16 divisors (see below), whose sum is σ = 158840010. Its totient is φ = 39865600.

The previous prime is 79731313. The next prime is 79731359. The reversal of 79731328 is 82313797.

It can be written as a sum of positive squares in only one way, i.e., 73136704 + 6594624 = 8552^2 + 2568^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311323 + ... + 311578.

Almost surely, 2^79731328 is an apocalyptic number.

It is an amenable number.

79731328 is a deficient number, since it is larger than the sum of its proper divisors (79108682).

79731328 is an equidigital number, since it uses as much as digits as its factorization.

79731328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622915 (or 622903 counting only the distinct ones).

The product of its digits is 63504, while the sum is 40.

The square root of 79731328 is about 8929.2400572501. The cubic root of 79731328 is about 430.4040334425.

The spelling of 79731328 in words is "seventy-nine million, seven hundred thirty-one thousand, three hundred twenty-eight".