79515880 has 32 divisors (see below), whose sum is σ = 179216640. Its totient is φ = 31752000.

The previous prime is 79515871. The next prime is 79515889. The reversal of 79515880 is 8851597.

It is an interprime number because it is at equal distance from previous prime (79515871) and next prime (79515889).

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (79515889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28717 + ... + 31363.

It is an arithmetic number, because the mean of its divisors is an integer number (5600520).

Almost surely, 2^79515880 is an apocalyptic number.

It is an amenable number.

79515880 is an abundant number, since it is smaller than the sum of its proper divisors (99700760).

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

79515880 is a wasteful number, since it uses less digits than its factorization.

79515880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3409 (or 3405 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 43.

The square root of 79515880 is about 8917.1677117793. The cubic root of 79515880 is about 430.0160080574.

It can be divided in two parts, 7951 and 5880, that added together give a palindrome (13831).

The spelling of 79515880 in words is "seventy-nine million, five hundred fifteen thousand, eight hundred eighty".