83278864 has 20 divisors (see below), whose sum is σ = 161645904. Its totient is φ = 41563808.

The previous prime is 83278829. The next prime is 83278879. The reversal of 83278864 is 46887238.

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, 4959 + ... + 13825.

Almost surely, 2^83278864 is an apocalyptic number.

It is an amenable number.

83278864 is a deficient number, since it is larger than the sum of its proper divisors (78367040).

83278864 is a wasteful number, since it uses less digits than its factorization.

83278864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9462 (or 9456 counting only the distinct ones).

The product of its digits is 516096, while the sum is 46.

The square root of 83278864 is about 9125.7253958247. The cubic root of 83278864 is about 436.6950449349.

The spelling of 83278864 in words is "eighty-three million, two hundred seventy-eight thousand, eight hundred sixty-four".