82974812 has 6 divisors (see below), whose sum is σ = 145205928. Its totient is φ = 41487404.

The previous prime is 82974811. The next prime is 82974847. The reversal of 82974812 is 21847928.

It is a self number, because there is not a number n which added to its sum of digits gives 82974812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82974811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10371848 + ... + 10371855.

It is an arithmetic number, because the mean of its divisors is an integer number (24200988).

Almost surely, 2^82974812 is an apocalyptic number.

It is an amenable number.

82974812 is a deficient number, since it is larger than the sum of its proper divisors (62231116).

82974812 is a wasteful number, since it uses less digits than its factorization.

82974812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20743707 (or 20743705 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

The square root of 82974812 is about 9109.0511031611. The cubic root of 82974812 is about 436.1629374458.

The spelling of 82974812 in words is "eighty-two million, nine hundred seventy-four thousand, eight hundred twelve".