82878636 has 24 divisors (see below), whose sum is σ = 200052720. Its totient is φ = 26673472.

The previous prime is 82878581. The next prime is 82878659. The reversal of 82878636 is 63687828.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118731 + ... + 119426.

It is an arithmetic number, because the mean of its divisors is an integer number (8335530).

Almost surely, 2^82878636 is an apocalyptic number.

It is an amenable number.

82878636 is an abundant number, since it is smaller than the sum of its proper divisors (117174084).

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

82878636 is a wasteful number, since it uses less digits than its factorization.

82878636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238193 (or 238191 counting only the distinct ones).

The product of its digits is 774144, while the sum is 48.

The square root of 82878636 is about 9103.7704276854. The cubic root of 82878636 is about 435.9943536569.

The spelling of 82878636 in words is "eighty-two million, eight hundred seventy-eight thousand, six hundred thirty-six".