82840812 has 24 divisors (see below), whose sum is σ = 196019712. Its totient is φ = 27224400.

The previous prime is 82840789. The next prime is 82840819. The reversal of 82840812 is 21804828.

It is not an unprimeable number, because it can be changed into a prime (82840819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47764 + ... + 49467.

It is an arithmetic number, because the mean of its divisors is an integer number (8167488).

Almost surely, 2^82840812 is an apocalyptic number.

It is an amenable number.

82840812 is an abundant number, since it is smaller than the sum of its proper divisors (113178900).

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

82840812 is a wasteful number, since it uses less digits than its factorization.

82840812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97309 (or 97307 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 33.

The square root of 82840812 is about 9101.6928095822. The cubic root of 82840812 is about 435.9280174631.

The spelling of 82840812 in words is "eighty-two million, eight hundred forty thousand, eight hundred twelve".