79632490 has 32 divisors (see below), whose sum is σ = 169104384. Its totient is φ = 26421120.

The previous prime is 79632481. The next prime is 79632491. The reversal of 79632490 is 9423697.

It is not an unprimeable number, because it can be changed into a prime (79632491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16179 + ... + 20518.

It is an arithmetic number, because the mean of its divisors is an integer number (5284512).

Almost surely, 2^79632490 is an apocalyptic number.

79632490 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

79632490 is an abundant number, since it is smaller than the sum of its proper divisors (89471894).

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

79632490 is a wasteful number, since it uses less digits than its factorization.

79632490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36742.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 79632490 is about 8923.7038274474. The cubic root of 79632490 is about 430.2261114754.

The spelling of 79632490 in words is "seventy-nine million, six hundred thirty-two thousand, four hundred ninety".