256207827 has 4 divisors (see below), whose sum is σ = 341610440. Its totient is φ = 170805216.

The previous prime is 256207817. The next prime is 256207841. The reversal of 256207827 is 728702652.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 256207827 - 2¹⁴ = 256191443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256207807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42701302 + ... + 42701307.

It is an arithmetic number, because the mean of its divisors is an integer number (85402610).

Almost surely, 2^256207827 is an apocalyptic number.

256207827 is a deficient number, since it is larger than the sum of its proper divisors (85402613).

256207827 is an equidigital number, since it uses as much as digits as its factorization.

256207827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85402612.

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 256207827 is about 16006.4932761676. The cubic root of 256207827 is about 635.1321997267.

The spelling of 256207827 in words is "two hundred fifty-six million, two hundred seven thousand, eight hundred twenty-seven".