256222634 has 16 divisors (see below), whose sum is σ = 391080960. Its totient is φ = 125880480.

The previous prime is 256222633. The next prime is 256222643. The reversal of 256222634 is 436222652.

It is a self number, because there is not a number n which added to its sum of digits gives 256222634.

It is not an unprimeable number, because it can be changed into a prime (256222633) 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, 24599 + ... + 33429.

It is an arithmetic number, because the mean of its divisors is an integer number (24442560).

Almost surely, 2^256222634 is an apocalyptic number.

256222634 is a deficient number, since it is larger than the sum of its proper divisors (134858326).

256222634 is a wasteful number, since it uses less digits than its factorization.

256222634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9085.

The product of its digits is 34560, while the sum is 32.

The square root of 256222634 is about 16006.9558005262. The cubic root of 256222634 is about 635.1444348738.

The spelling of 256222634 in words is "two hundred fifty-six million, two hundred twenty-two thousand, six hundred thirty-four".