256662122 has 16 divisors (see below), whose sum is σ = 398714400. Its totient is φ = 123767280.

The previous prime is 256662121. The next prime is 256662137. The reversal of 256662122 is 221266652.

It is not an unprimeable number, because it can be changed into a prime (256662121) 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, 66029 + ... + 69807.

It is an arithmetic number, because the mean of its divisors is an integer number (24919650).

Almost surely, 2^256662122 is an apocalyptic number.

256662122 is a deficient number, since it is larger than the sum of its proper divisors (142052278).

256662122 is a wasteful number, since it uses less digits than its factorization.

256662122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4981.

The product of its digits is 17280, while the sum is 32.

The square root of 256662122 is about 16020.6779506986. The cubic root of 256662122 is about 635.5073730301.

The spelling of 256662122 in words is "two hundred fifty-six million, six hundred sixty-two thousand, one hundred twenty-two".