82855940 has 12 divisors (see below), whose sum is σ = 173997516. Its totient is φ = 33142368.

The previous prime is 82855937. The next prime is 82855951. The reversal of 82855940 is 4955828.

It can be written as a sum of positive squares in 2 ways, for example, as 34386496 + 48469444 = 5864^2 + 6962^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

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, 2071379 + ... + 2071418.

It is an arithmetic number, because the mean of its divisors is an integer number (14499793).

Almost surely, 2^82855940 is an apocalyptic number.

It is an amenable number.

82855940 is an abundant number, since it is smaller than the sum of its proper divisors (91141576).

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

82855940 is a wasteful number, since it uses less digits than its factorization.

82855940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4142806 (or 4142804 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 41.

The square root of 82855940 is about 9102.5238258408. The cubic root of 82855940 is about 435.9545515570.

The spelling of 82855940 in words is "eighty-two million, eight hundred fifty-five thousand, nine hundred forty".