79220736 has 156 divisors (see below), whose sum is σ = 262374112. Its totient is φ = 22560768.

The previous prime is 79220707. The next prime is 79220759. The reversal of 79220736 is 63702297.

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

It is a self number, because there is not a number n which added to its sum of digits gives 79220736.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 257895 + ... + 258201.

Almost surely, 2^79220736 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 79220736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131187056).

79220736 is an abundant number, since it is smaller than the sum of its proper divisors (183153376).

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

79220736 is a wasteful number, since it uses less digits than its factorization.

79220736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 79220736 is about 8900.6031256314. The cubic root of 79220736 is about 429.4833094425.

It can be divided in two parts, 792 and 20736, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 79220736 in words is "seventy-nine million, two hundred twenty thousand, seven hundred thirty-six".