79540704 has 144 divisors (see below), whose sum is σ = 240235632. Its totient is φ = 25878528.

The previous prime is 79540667. The next prime is 79540717. The reversal of 79540704 is 40704597.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 412032 + ... + 412224.

It is an arithmetic number, because the mean of its divisors is an integer number (1668303).

Almost surely, 2^79540704 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 79540704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120117816).

79540704 is an abundant number, since it is smaller than the sum of its proper divisors (160694928).

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

79540704 is a wasteful number, since it uses less digits than its factorization.

79540704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 79540704 is about 8918.5595249457. The cubic root of 79540704 is about 430.0607521879.

The spelling of 79540704 in words is "seventy-nine million, five hundred forty thousand, seven hundred four".