82865800 has 24 divisors (see below), whose sum is σ = 192663450. Its totient is φ = 33146240.

The previous prime is 82865791. The next prime is 82865813. The reversal of 82865800 is 856828.

It can be written as a sum of positive squares in 3 ways, for example, as 69455556 + 13410244 = 8334^2 + 3662^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 82865800.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 206965 + ... + 207364.

Almost surely, 2^82865800 is an apocalyptic number.

It is an amenable number.

82865800 is an abundant number, since it is smaller than the sum of its proper divisors (109797650).

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

82865800 is a wasteful number, since it uses less digits than its factorization.

82865800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414345 (or 414336 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 82865800 is about 9103.0654177590. The cubic root of 82865800 is about 435.9718439860.

The spelling of 82865800 in words is "eighty-two million, eight hundred sixty-five thousand, eight hundred".