256286355 has 32 divisors (see below), whose sum is σ = 460809216. Its totient is φ = 120683904.

The previous prime is 256286299. The next prime is 256286377. The reversal of 256286355 is 553682652.

It is not a de Polignac number, because 256286355 - 2⁶ = 256286291 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24087 + ... + 33056.

It is an arithmetic number, because the mean of its divisors is an integer number (14400288).

Almost surely, 2^256286355 is an apocalyptic number.

256286355 is a deficient number, since it is larger than the sum of its proper divisors (204522861).

256286355 is a wasteful number, since it uses less digits than its factorization.

256286355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57187.

The product of its digits is 432000, while the sum is 42.

The square root of 256286355 is about 16008.9460927320. The cubic root of 256286355 is about 635.1970826868.

The spelling of 256286355 in words is "two hundred fifty-six million, two hundred eighty-six thousand, three hundred fifty-five".