256264442 has 16 divisors (see below), whose sum is σ = 451184640. Its totient is φ = 106859088.

The previous prime is 256264441. The next prime is 256264453. The reversal of 256264442 is 244462652.

It is not an unprimeable number, because it can be changed into a prime (256264441) 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, 246842 + ... + 247877.

It is an arithmetic number, because the mean of its divisors is an integer number (28199040).

Almost surely, 2^256264442 is an apocalyptic number.

256264442 is a deficient number, since it is larger than the sum of its proper divisors (194920198).

256264442 is a wasteful number, since it uses less digits than its factorization.

256264442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494765.

The product of its digits is 92160, while the sum is 35.

The square root of 256264442 is about 16008.2616795204. The cubic root of 256264442 is about 635.1789786271.

The spelling of 256264442 in words is "two hundred fifty-six million, two hundred sixty-four thousand, four hundred forty-two".