2782571256 has 48 divisors (see below), whose sum is σ = 7558558800. Its totient is φ = 924763392.

The previous prime is 2782571251. The next prime is 2782571263. The reversal of 2782571256 is 6521752872.

2782571256 is a `hidden beast` number, since 2 + 78 + 2 + 571 + 2 + 5 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2782571251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33076 + ... + 81603.

It is an arithmetic number, because the mean of its divisors is an integer number (157469975).

Almost surely, 2^2782571256 is an apocalyptic number.

It is an amenable number.

2782571256 is an abundant number, since it is smaller than the sum of its proper divisors (4775987544).

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

2782571256 is a wasteful number, since it uses less digits than its factorization.

2782571256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115028 (or 115021 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 2782571256 is about 52750.0829951954. The cubic root of 2782571256 is about 1406.5292393862.

The spelling of 2782571256 in words is "two billion, seven hundred eighty-two million, five hundred seventy-one thousand, two hundred fifty-six".