256535876 has 12 divisors (see below), whose sum is σ = 450899820. Its totient is φ = 127707360.

The previous prime is 256535869. The next prime is 256535879. The reversal of 256535876 is 678535652.

256535876 = 235² + 236² + ... + 921².

256535876 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 211993600 + 44542276 = 14560^2 + 6674^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 256535876.

It is not an unprimeable number, because it can be changed into a prime (256535879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139115 + ... + 140946.

It is an arithmetic number, because the mean of its divisors is an integer number (37574985).

Almost surely, 2^256535876 is an apocalyptic number.

It is an amenable number.

256535876 is a deficient number, since it is larger than the sum of its proper divisors (194363944).

256535876 is a wasteful number, since it uses less digits than its factorization.

256535876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280294 (or 280292 counting only the distinct ones).

The product of its digits is 1512000, while the sum is 47.

The square root of 256535876 is about 16016.7373706383. The cubic root of 256535876 is about 635.4031589487.

The spelling of 256535876 in words is "two hundred fifty-six million, five hundred thirty-five thousand, eight hundred seventy-six".