256051274 has 8 divisors (see below), whose sum is σ = 384760800. Its totient is φ = 127797676.

The previous prime is 256051267. The next prime is 256051291. The reversal of 256051274 is 472150652.

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 256051274.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112574 + ... + 114825.

It is an arithmetic number, because the mean of its divisors is an integer number (48095100).

Almost surely, 2^256051274 is an apocalyptic number.

256051274 is a deficient number, since it is larger than the sum of its proper divisors (128709526).

256051274 is a wasteful number, since it uses less digits than its factorization.

256051274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227964.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 256051274 is about 16001.6022322766. The cubic root of 256051274 is about 635.0028098332.

The spelling of 256051274 in words is "two hundred fifty-six million, fifty-one thousand, two hundred seventy-four".