79742928 has 20 divisors (see below), whose sum is σ = 206002688. Its totient is φ = 26580960.

The previous prime is 79742917. The next prime is 79742933. The reversal of 79742928 is 82924797.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 1661311 = 79742928 / (7 + 9 + 7 + 4 + 2 + 9 + 2 + 8).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 830608 + ... + 830703.

Almost surely, 2^79742928 is an apocalyptic number.

It is an amenable number.

79742928 is an abundant number, since it is smaller than the sum of its proper divisors (126259760).

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

79742928 is a wasteful number, since it uses less digits than its factorization.

79742928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661322 (or 1661316 counting only the distinct ones).

The product of its digits is 508032, while the sum is 48.

The square root of 79742928 is about 8929.8895849837. The cubic root of 79742928 is about 430.4249053917.

The spelling of 79742928 in words is "seventy-nine million, seven hundred forty-two thousand, nine hundred twenty-eight".