256934427 has 8 divisors (see below), whose sum is σ = 345905664. Its totient is φ = 169626408.

The previous prime is 256934389. The next prime is 256934429. The reversal of 256934427 is 724439652.

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

It is not a de Polignac number, because 256934427 - 2²⁶ = 189825563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256934429) 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, 415443 + ... + 416060.

It is an arithmetic number, because the mean of its divisors is an integer number (43238208).

Almost surely, 2^256934427 is an apocalyptic number.

256934427 is a deficient number, since it is larger than the sum of its proper divisors (88971237).

256934427 is a wasteful number, since it uses less digits than its factorization.

256934427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831609.

The product of its digits is 362880, while the sum is 42.

The square root of 256934427 is about 16029.1742457308. The cubic root of 256934427 is about 635.7320402181.

The spelling of 256934427 in words is "two hundred fifty-six million, nine hundred thirty-four thousand, four hundred twenty-seven".