82257570 has 48 divisors (see below), whose sum is σ = 220776192. Its totient is φ = 21227040.

The previous prime is 82257563. The next prime is 82257583. The reversal of 82257570 is 7575228.

82257570 is a `hidden beast` number, since 82 + 2 + 5 + 7 + 570 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11952 + ... + 17531.

It is an arithmetic number, because the mean of its divisors is an integer number (4599504).

Almost surely, 2^82257570 is an apocalyptic number.

82257570 is an abundant number, since it is smaller than the sum of its proper divisors (138518622).

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

82257570 is a wasteful number, since it uses less digits than its factorization.

82257570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29527 (or 29524 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 82257570 is about 9069.5959116159. The cubic root of 82257570 is about 434.9025544707.

The spelling of 82257570 in words is "eighty-two million, two hundred fifty-seven thousand, five hundred seventy".