256170234 has 8 divisors (see below), whose sum is σ = 512340480. Its totient is φ = 85390076.

The previous prime is 256170223. The next prime is 256170259. The reversal of 256170234 is 432071652.

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

256170234 is an admirable number.

It is a super-2 number, since 2×256170234² = 131246377575229512, which contains 22 as substring.

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, 21347514 + ... + 21347525.

It is an arithmetic number, because the mean of its divisors is an integer number (64042560).

Almost surely, 2^256170234 is an apocalyptic number.

256170234 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.

256170234 is a wasteful number, since it uses less digits than its factorization.

256170234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42695044.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 256170234 is about 16005.3189284063. The cubic root of 256170234 is about 635.1011342008.

The spelling of 256170234 in words is "two hundred fifty-six million, one hundred seventy thousand, two hundred thirty-four".