82142856 has 32 divisors (see below), whose sum is σ = 228175200. Its totient is φ = 27380880.

The previous prime is 82142831. The next prime is 82142891. The reversal of 82142856 is 65824128.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 82142856.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189930 + ... + 190361.

It is an arithmetic number, because the mean of its divisors is an integer number (7130475).

Almost surely, 2^82142856 is an apocalyptic number.

It is an amenable number.

82142856 is an abundant number, since it is smaller than the sum of its proper divisors (146032344).

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

82142856 is a wasteful number, since it uses less digits than its factorization.

82142856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380306 (or 380296 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 82142856 is about 9063.2696087008. The cubic root of 82142856 is about 434.7002929602.

The spelling of 82142856 in words is "eighty-two million, one hundred forty-two thousand, eight hundred fifty-six".