256279803 has 8 divisors (see below), whose sum is σ = 367991568. Its totient is φ = 157710624.

The previous prime is 256279799. The next prime is 256279831. The reversal of 256279803 is 308972652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 256279803 - 2² = 256279799 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (256279603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3285600 + ... + 3285677.

It is an arithmetic number, because the mean of its divisors is an integer number (45998946).

Almost surely, 2^256279803 is an apocalyptic number.

256279803 is a deficient number, since it is larger than the sum of its proper divisors (111711765).

256279803 is a wasteful number, since it uses less digits than its factorization.

256279803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6571293.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 256279803 is about 16008.7414558422. The cubic root of 256279803 is about 635.1916696703.

The spelling of 256279803 in words is "two hundred fifty-six million, two hundred seventy-nine thousand, eight hundred three".