79831872 has 56 divisors (see below), whose sum is σ = 234696000. Its totient is φ = 26610048.

The previous prime is 79831853. The next prime is 79831877. The reversal of 79831872 is 27813897.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79831877) 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, 21372 + ... + 24827.

It is an arithmetic number, because the mean of its divisors is an integer number (4191000).

Almost surely, 2^79831872 is an apocalyptic number.

79831872 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

79831872 is an abundant number, since it is smaller than the sum of its proper divisors (154864128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79831872 is a wasteful number, since it uses less digits than its factorization.

79831872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46220 (or 46204 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 79831872 is about 8934.8683258345. The cubic root of 79831872 is about 430.5848756397.

The spelling of 79831872 in words is "seventy-nine million, eight hundred thirty-one thousand, eight hundred seventy-two".