79731136 has 14 divisors (see below), whose sum is σ = 158216600. Its totient is φ = 39865536.

The previous prime is 79731131. The next prime is 79731137. The reversal of 79731136 is 63113797.

It is a junction number, because it is equal to n+sod(n) for n = 79731095 and 79731104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79731131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622836 + ... + 622963.

Almost surely, 2^79731136 is an apocalyptic number.

It is an amenable number.

79731136 is a deficient number, since it is larger than the sum of its proper divisors (78485464).

79731136 is a wasteful number, since it uses less digits than its factorization.

79731136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245811 (or 1245801 counting only the distinct ones).

The product of its digits is 23814, while the sum is 37.

The square root of 79731136 is about 8929.2293060488. The cubic root of 79731136 is about 430.4036879587.

The spelling of 79731136 in words is "seventy-nine million, seven hundred thirty-one thousand, one hundred thirty-six".