2857256982 has 48 divisors (see below), whose sum is σ = 6259885632. Its totient is φ = 941831280.

The previous prime is 2857256981. The next prime is 2857256999. The reversal of 2857256982 is 2896527582.

It is a happy number.

2857256982 is a `hidden beast` number, since 2 + 8 + 5 + 72 + 569 + 8 + 2 = 666.

It is a super-2 number, since 2×2857256982² = 16327834922375496648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2857256981) by changing a digit.

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, 721933 + ... + 725879.

It is an arithmetic number, because the mean of its divisors is an integer number (130414284).

Almost surely, 2^2857256982 is an apocalyptic number.

2857256982 is an abundant number, since it is smaller than the sum of its proper divisors (3402628650).

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

2857256982 is a wasteful number, since it uses less digits than its factorization.

2857256982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4393 (or 4390 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 54.

The square root of 2857256982 is about 53453.3159121116. The cubic root of 2857256982 is about 1419.0023048681.

The spelling of 2857256982 in words is "two billion, eight hundred fifty-seven million, two hundred fifty-six thousand, nine hundred eighty-two".