256354234 has 8 divisors (see below), whose sum is σ = 384608340. Its totient is φ = 128151456.

The previous prime is 256354223. The next prime is 256354291. The reversal of 256354234 is 432453652.

It can be written as a sum of positive squares in 2 ways, for example, as 254243025 + 2111209 = 15945^2 + 1453^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 256354234.

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, 4152 + ... + 23020.

Almost surely, 2^256354234 is an apocalyptic number.

256354234 is a deficient number, since it is larger than the sum of its proper divisors (128254106).

256354234 is a wasteful number, since it uses less digits than its factorization.

256354234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25664.

The product of its digits is 86400, while the sum is 34.

The square root of 256354234 is about 16011.0659857487. The cubic root of 256354234 is about 635.2531563402.

The spelling of 256354234 in words is "two hundred fifty-six million, three hundred fifty-four thousand, two hundred thirty-four".