79987072 has 32 divisors (see below), whose sum is σ = 173838600. Its totient is φ = 36357120.

The previous prime is 79987021. The next prime is 79987087. The reversal of 79987072 is 27078997.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26997 + ... + 29812.

Almost surely, 2^79987072 is an apocalyptic number.

It is an amenable number.

79987072 is an abundant number, since it is smaller than the sum of its proper divisors (93851528).

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

79987072 is a wasteful number, since it uses less digits than its factorization.

79987072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56834 (or 56822 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 49.

The square root of 79987072 is about 8943.5491836295. The cubic root of 79987072 is about 430.8637263129.

The spelling of 79987072 in words is "seventy-nine million, nine hundred eighty-seven thousand, seventy-two".