79581132 has 72 divisors (see below), whose sum is σ = 208288080. Its totient is φ = 25603200.

The previous prime is 79581119. The next prime is 79581137. The reversal of 79581132 is 23118597.

79581132 is a `hidden beast` number, since 79 + 581 + 1 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (79581137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 156094 + ... + 156602.

It is an arithmetic number, because the mean of its divisors is an integer number (2892890).

Almost surely, 2^79581132 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 79581132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104144040).

79581132 is an abundant number, since it is smaller than the sum of its proper divisors (128706948).

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

79581132 is a wasteful number, since it uses less digits than its factorization.

79581132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663 (or 658 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 79581132 is about 8920.8257465327. The cubic root of 79581132 is about 430.1336018962.

The spelling of 79581132 in words is "seventy-nine million, five hundred eighty-one thousand, one hundred thirty-two".