79812072 has 24 divisors (see below), whose sum is σ = 216157890. Its totient is φ = 26604000.

The previous prime is 79812067. The next prime is 79812079. The reversal of 79812072 is 27021897.

It can be written as a sum of positive squares in only one way, i.e., 46703556 + 33108516 = 6834^2 + 5754^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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 (79812079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 554179 + ... + 554322.

Almost surely, 2^79812072 is an apocalyptic number.

79812072 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

79812072 is an abundant number, since it is smaller than the sum of its proper divisors (136345818).

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

79812072 is a wasteful number, since it uses less digits than its factorization.

79812072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108513 (or 1108506 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 79812072 is about 8933.7602385558. The cubic root of 79812072 is about 430.5492746312.

The spelling of 79812072 in words is "seventy-nine million, eight hundred twelve thousand, seventy-two".