71992680 has 32 divisors (see below), whose sum is σ = 215978400. Its totient is φ = 19198016.

The previous prime is 71992663. The next prime is 71992693. The reversal of 71992680 is 8629917.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299850 + ... + 300089.

It is an arithmetic number, because the mean of its divisors is an integer number (6749325).

Almost surely, 2^71992680 is an apocalyptic number.

It is an amenable number.

71992680 is an abundant number, since it is smaller than the sum of its proper divisors (143985720).

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

71992680 is a wasteful number, since it uses less digits than its factorization.

71992680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599953 (or 599949 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 71992680 is about 8484.8500281384. The cubic root of 71992680 is about 416.0026657867.

The spelling of 71992680 in words is "seventy-one million, nine hundred ninety-two thousand, six hundred eighty".