79726590 has 48 divisors (see below), whose sum is σ = 207752688. Its totient is φ = 21212928.

The previous prime is 79726589. The next prime is 79726613. The reversal of 79726590 is 9562797.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60822 + ... + 62118.

It is an arithmetic number, because the mean of its divisors is an integer number (4328181).

Almost surely, 2^79726590 is an apocalyptic number.

79726590 is an abundant number, since it is smaller than the sum of its proper divisors (128026098).

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

79726590 is a wasteful number, since it uses less digits than its factorization.

79726590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993 (or 1990 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 79726590 is about 8928.9747451765. The cubic root of 79726590 is about 430.3955077485.

The spelling of 79726590 in words is "seventy-nine million, seven hundred twenty-six thousand, five hundred ninety".