256122267 has 8 divisors (see below), whose sum is σ = 341986320. Its totient is φ = 170503200.

The previous prime is 256122259. The next prime is 256122271. The reversal of 256122267 is 762221652.

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

It is not a de Polignac number, because 256122267 - 2³ = 256122259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256122247) 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, 58792 + ... + 62997.

It is an arithmetic number, because the mean of its divisors is an integer number (42748290).

Almost surely, 2^256122267 is an apocalyptic number.

256122267 is a deficient number, since it is larger than the sum of its proper divisors (85864053).

256122267 is a wasteful number, since it uses less digits than its factorization.

256122267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122493.

The product of its digits is 20160, while the sum is 33.

The square root of 256122267 is about 16003.8203876449. The cubic root of 256122267 is about 635.0614915548.

The spelling of 256122267 in words is "two hundred fifty-six million, one hundred twenty-two thousand, two hundred sixty-seven".