256345834 has 8 divisors (see below), whose sum is σ = 404756640. Its totient is φ = 121426956.

The previous prime is 256345829. The next prime is 256345841. The reversal of 256345834 is 438543652.

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

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, 3372934 + ... + 3373009.

It is an arithmetic number, because the mean of its divisors is an integer number (50594580).

Almost surely, 2^256345834 is an apocalyptic number.

256345834 is a deficient number, since it is larger than the sum of its proper divisors (148410806).

256345834 is a wasteful number, since it uses less digits than its factorization.

256345834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6745964.

The product of its digits is 345600, while the sum is 40.

The square root of 256345834 is about 16010.8036650257. The cubic root of 256345834 is about 635.2462177840.

The spelling of 256345834 in words is "two hundred fifty-six million, three hundred forty-five thousand, eight hundred thirty-four".