71987208 has 32 divisors (see below), whose sum is σ = 185775360. Its totient is φ = 23221440.

The previous prime is 71987191. The next prime is 71987233. The reversal of 71987208 is 80278917.

It is a self number, because there is not a number n which added to its sum of digits gives 71987208.

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, 47635 + ... + 49122.

It is an arithmetic number, because the mean of its divisors is an integer number (5805480).

Almost surely, 2^71987208 is an apocalyptic number.

It is an amenable number.

71987208 is an abundant number, since it is smaller than the sum of its proper divisors (113788152).

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

71987208 is a wasteful number, since it uses less digits than its factorization.

71987208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96797 (or 96793 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 42.

The square root of 71987208 is about 8484.5275649266. The cubic root of 71987208 is about 415.9921257139.

The spelling of 71987208 in words is "seventy-one million, nine hundred eighty-seven thousand, two hundred eight".