71893864 has 32 divisors (see below), whose sum is σ = 156971520. Its totient is φ = 30229056.

The previous prime is 71893793. The next prime is 71893903. The reversal of 71893864 is 46839817.

It is a happy number.

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, 9144 + ... + 15079.

It is an arithmetic number, because the mean of its divisors is an integer number (4905360).

Almost surely, 2^71893864 is an apocalyptic number.

It is an amenable number.

71893864 is an abundant number, since it is smaller than the sum of its proper divisors (85077656).

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

71893864 is a wasteful number, since it uses less digits than its factorization.

71893864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24289 (or 24285 counting only the distinct ones).

The product of its digits is 290304, while the sum is 46.

The square root of 71893864 is about 8479.0249439426. The cubic root of 71893864 is about 415.8122457712.

The spelling of 71893864 in words is "seventy-one million, eight hundred ninety-three thousand, eight hundred sixty-four".