2556837028 has 12 divisors (see below), whose sum is σ = 4507126092. Its totient is φ = 1269086720.

The previous prime is 2556837013. The next prime is 2556837053. The reversal of 2556837028 is 8207386552.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1023488064 + 1533348964 = 31992^2 + 39158^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2332333 + ... + 2333428.

It is an arithmetic number, because the mean of its divisors is an integer number (375593841).

Almost surely, 2^2556837028 is an apocalyptic number.

It is an amenable number.

2556837028 is a deficient number, since it is larger than the sum of its proper divisors (1950289064).

2556837028 is a wasteful number, since it uses less digits than its factorization.

2556837028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4665902 (or 4665900 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 46.

The square root of 2556837028 is about 50565.1760404332. The cubic root of 2556837028 is about 1367.4171286873.

The spelling of 2556837028 in words is "two billion, five hundred fifty-six million, eight hundred thirty-seven thousand, twenty-eight".