71287896 has 16 divisors (see below), whose sum is σ = 178219800. Its totient is φ = 23762624.

The previous prime is 71287847. The next prime is 71287903. The reversal of 71287896 is 69878217.

It is a super-2 number, since 2×71287896² = 10163928232213632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1485141 + ... + 1485188.

Almost surely, 2^71287896 is an apocalyptic number.

It is an amenable number.

71287896 is an abundant number, since it is smaller than the sum of its proper divisors (106931904).

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

71287896 is a wasteful number, since it uses less digits than its factorization.

71287896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2970338 (or 2970334 counting only the distinct ones).

The product of its digits is 338688, while the sum is 48.

The square root of 71287896 is about 8443.2159749707. The cubic root of 71287896 is about 414.6407031966.

The spelling of 71287896 in words is "seventy-one million, two hundred eighty-seven thousand, eight hundred ninety-six".