79787748 has 12 divisors (see below), whose sum is σ = 186171440. Its totient is φ = 26595912.

The previous prime is 79787731. The next prime is 79787753. The reversal of 79787748 is 84778797.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3324478 + ... + 3324501.

Almost surely, 2^79787748 is an apocalyptic number.

It is an amenable number.

79787748 is an abundant number, since it is smaller than the sum of its proper divisors (106383692).

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

79787748 is a wasteful number, since it uses less digits than its factorization.

79787748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6648986 (or 6648984 counting only the distinct ones).

The product of its digits is 5531904, while the sum is 57.

The square root of 79787748 is about 8932.3987819622. The cubic root of 79787748 is about 430.5055312710.

The spelling of 79787748 in words is "seventy-nine million, seven hundred eighty-seven thousand, seven hundred forty-eight".