82815956 has 24 divisors (see below), whose sum is σ = 146576640. Its totient is φ = 40940352.

The previous prime is 82815949. The next prime is 82815983. The reversal of 82815956 is 65951828.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202280 + ... + 202688.

It is an arithmetic number, because the mean of its divisors is an integer number (6107360).

Almost surely, 2^82815956 is an apocalyptic number.

It is an amenable number.

82815956 is a deficient number, since it is larger than the sum of its proper divisors (63760684).

82815956 is a wasteful number, since it uses less digits than its factorization.

82815956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863 (or 861 counting only the distinct ones).

The product of its digits is 172800, while the sum is 44.

The square root of 82815956 is about 9100.3272468632. The cubic root of 82815956 is about 435.8844137110.

The spelling of 82815956 in words is "eighty-two million, eight hundred fifteen thousand, nine hundred fifty-six".