79730836 has 18 divisors (see below), whose sum is σ = 140926058. Its totient is φ = 39470160.

The previous prime is 79730813. The next prime is 79730837. The reversal of 79730836 is 63803797.

It can be written as a sum of positive squares in only one way, i.e., 41216400 + 38514436 = 6420^2 + 6206^2 .

It is a junction number, because it is equal to n+sod(n) for n = 79730792 and 79730801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79730837) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44926 + ... + 46666.

Almost surely, 2^79730836 is an apocalyptic number.

It is an amenable number.

79730836 is a deficient number, since it is larger than the sum of its proper divisors (61195222).

79730836 is a wasteful number, since it uses less digits than its factorization.

79730836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1959 (or 1850 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 79730836 is about 8929.2125072707. The cubic root of 79730836 is about 430.4031481392.

The spelling of 79730836 in words is "seventy-nine million, seven hundred thirty thousand, eight hundred thirty-six".