79056640 has 72 divisors (see below), whose sum is σ = 203974848. Its totient is φ = 29184000.

The previous prime is 79056623. The next prime is 79056641. The reversal of 79056640 is 4665097.

It is a self number, because there is not a number n which added to its sum of digits gives 79056640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79056641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14265 + ... + 19015.

It is an arithmetic number, because the mean of its divisors is an integer number (2832984).

Almost surely, 2^79056640 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 79056640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101987424).

79056640 is an abundant number, since it is smaller than the sum of its proper divisors (124918208).

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

79056640 is a wasteful number, since it uses less digits than its factorization.

79056640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4785 (or 4771 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 79056640 is about 8891.3800953508. The cubic root of 79056640 is about 429.1865638600.

The spelling of 79056640 in words is "seventy-nine million, fifty-six thousand, six hundred forty".