82102866 has 24 divisors (see below), whose sum is σ = 167078544. Its totient is φ = 26896920.

The previous prime is 82102841. The next prime is 82102871. The reversal of 82102866 is 66820128.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18921 + ... + 22851.

It is an arithmetic number, because the mean of its divisors is an integer number (6961606).

Almost surely, 2^82102866 is an apocalyptic number.

82102866 is an abundant number, since it is smaller than the sum of its proper divisors (84975678).

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

82102866 is a wasteful number, since it uses less digits than its factorization.

82102866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4054 (or 3995 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 82102866 is about 9061.0631826514. The cubic root of 82102866 is about 434.6297391011.

The spelling of 82102866 in words is "eighty-two million, one hundred two thousand, eight hundred sixty-six".