79689072 has 20 divisors (see below), whose sum is σ = 205863560. Its totient is φ = 26563008.

The previous prime is 79689067. The next prime is 79689073. The reversal of 79689072 is 27098697.

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: 1660189 = 79689072 / (7 + 9 + 6 + 8 + 9 + 0 + 7 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79689073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 830047 + ... + 830142.

It is an arithmetic number, because the mean of its divisors is an integer number (10293178).

Almost surely, 2^79689072 is an apocalyptic number.

It is an amenable number.

79689072 is an abundant number, since it is smaller than the sum of its proper divisors (126174488).

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

79689072 is a wasteful number, since it uses less digits than its factorization.

79689072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660200 (or 1660194 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 79689072 is about 8926.8735848560. The cubic root of 79689072 is about 430.3279848462.

The spelling of 79689072 in words is "seventy-nine million, six hundred eighty-nine thousand, seventy-two".