256876436 has 12 divisors (see below), whose sum is σ = 449682240. Its totient is φ = 128395800.

The previous prime is 256876421. The next prime is 256876441. The reversal of 256876436 is 634678652.

It is a congruent number.

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, 5861 + ... + 23411.

It is an arithmetic number, because the mean of its divisors is an integer number (37473520).

Almost surely, 2^256876436 is an apocalyptic number.

It is an amenable number.

256876436 is a deficient number, since it is larger than the sum of its proper divisors (192805804).

256876436 is a wasteful number, since it uses less digits than its factorization.

256876436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21214 (or 21212 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 47.

The square root of 256876436 is about 16027.3652232674. The cubic root of 256876436 is about 635.6842076366.

It can be divided in two parts, 25687 and 6436, that added together give a palindrome (32123).

The spelling of 256876436 in words is "two hundred fifty-six million, eight hundred seventy-six thousand, four hundred thirty-six".