82878572 has 12 divisors (see below), whose sum is σ = 165757200. Its totient is φ = 35519376.

The previous prime is 82878559. The next prime is 82878581. The reversal of 82878572 is 27587828.

82878572 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 1479947 + ... + 1480002.

It is an arithmetic number, because the mean of its divisors is an integer number (13813100).

Almost surely, 2^82878572 is an apocalyptic number.

It is an amenable number.

82878572 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

82878572 is a wasteful number, since it uses less digits than its factorization.

82878572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2959960 (or 2959958 counting only the distinct ones).

The product of its digits is 501760, while the sum is 47.

The square root of 82878572 is about 9103.7669126576. The cubic root of 82878572 is about 435.9942414300.

The spelling of 82878572 in words is "eighty-two million, eight hundred seventy-eight thousand, five hundred seventy-two".