79236520 has 64 divisors (see below), whose sum is σ = 196525440. Its totient is φ = 28512000.

The previous prime is 79236503. The next prime is 79236581. The reversal of 79236520 is 2563297.

It is a happy number.

It is a super-2 number, since 2×79236520² = 12556852203420800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43549 + ... + 45331.

It is an arithmetic number, because the mean of its divisors is an integer number (3070710).

Almost surely, 2^79236520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79236520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98262720).

79236520 is an abundant number, since it is smaller than the sum of its proper divisors (117288920).

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

79236520 is a wasteful number, since it uses less digits than its factorization.

79236520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906 (or 1902 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 79236520 is about 8901.4897629554. The cubic root of 79236520 is about 429.5118310760.

The spelling of 79236520 in words is "seventy-nine million, two hundred thirty-six thousand, five hundred twenty".