82869940 has 12 divisors (see below), whose sum is σ = 174026916. Its totient is φ = 33147968.

The previous prime is 82869937. The next prime is 82869959. The reversal of 82869940 is 4996828.

It can be written as a sum of positive squares in 2 ways, for example, as 41422096 + 41447844 = 6436^2 + 6438^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2071729 + ... + 2071768.

It is an arithmetic number, because the mean of its divisors is an integer number (14502243).

Almost surely, 2^82869940 is an apocalyptic number.

It is an amenable number.

82869940 is an abundant number, since it is smaller than the sum of its proper divisors (91156976).

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

82869940 is a wasteful number, since it uses less digits than its factorization.

82869940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4143506 (or 4143504 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 82869940 is about 9103.2928108460. The cubic root of 82869940 is about 435.9791042927.

The spelling of 82869940 in words is "eighty-two million, eight hundred sixty-nine thousand, nine hundred forty".