79115040 has 72 divisors (see below), whose sum is σ = 269984988. Its totient is φ = 21096960.

The previous prime is 79115027. The next prime is 79115041. The reversal of 79115040 is 4051197.

It can be written as a sum of positive squares in 2 ways, for example, as 78216336 + 898704 = 8844^2 + 948^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 79114995 and 79115013.

It is not an unprimeable number, because it can be changed into a prime (79115041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26031 + ... + 28910.

Almost surely, 2^79115040 is an apocalyptic number.

It is an amenable number.

79115040 is an abundant number, since it is smaller than the sum of its proper divisors (190869948).

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

79115040 is a wasteful number, since it uses less digits than its factorization.

79115040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54962 (or 54951 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 79115040 is about 8894.6635686798. The cubic root of 79115040 is about 429.2922194426.

The spelling of 79115040 in words is "seventy-nine million, one hundred fifteen thousand, forty".