256851126 has 48 divisors (see below), whose sum is σ = 650817024. Its totient is φ = 71677872.

The previous prime is 256851121. The next prime is 256851137. The reversal of 256851126 is 621158652.

It is a super-3 number, since 3×256851126³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256851121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18286 + ... + 29121.

It is an arithmetic number, because the mean of its divisors is an integer number (13558688).

Almost surely, 2^256851126 is an apocalyptic number.

256851126 is an abundant number, since it is smaller than the sum of its proper divisors (393965898).

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

256851126 is a wasteful number, since it uses less digits than its factorization.

256851126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47465 (or 47462 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 256851126 is about 16026.5756167685. The cubic root of 256851126 is about 635.6633289916.

The spelling of 256851126 in words is "two hundred fifty-six million, eight hundred fifty-one thousand, one hundred twenty-six".