82978504 has 16 divisors (see below), whose sum is σ = 177811200. Its totient is φ = 35562192.

The previous prime is 82978501. The next prime is 82978517. The reversal of 82978504 is 40587928.

It is not an unprimeable number, because it can be changed into a prime (82978501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 740824 + ... + 740935.

It is an arithmetic number, because the mean of its divisors is an integer number (11113200).

Almost surely, 2^82978504 is an apocalyptic number.

It is an amenable number.

82978504 is an abundant number, since it is smaller than the sum of its proper divisors (94832696).

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

82978504 is a wasteful number, since it uses less digits than its factorization.

82978504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481772 (or 1481768 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 82978504 is about 9109.2537564830. The cubic root of 82978504 is about 436.1694064358.

The spelling of 82978504 in words is "eighty-two million, nine hundred seventy-eight thousand, five hundred four".