256383858 has 8 divisors (see below), whose sum is σ = 512767728. Its totient is φ = 85461284.

The previous prime is 256383833. The next prime is 256383889. The reversal of 256383858 is 858383652.

256383858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

256383858 is an admirable number.

It is an alternating number because its digits alternate between even and odd.

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, 21365316 + ... + 21365327.

It is an arithmetic number, because the mean of its divisors is an integer number (64095966).

Almost surely, 2^256383858 is an apocalyptic number.

256383858 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256383858 is a wasteful number, since it uses less digits than its factorization.

256383858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42730648.

The product of its digits is 1382400, while the sum is 48.

The square root of 256383858 is about 16011.9910691956. The cubic root of 256383858 is about 635.2776251054.

The spelling of 256383858 in words is "two hundred fifty-six million, three hundred eighty-three thousand, eight hundred fifty-eight".