256212267 has 8 divisors (see below), whose sum is σ = 341769360. Its totient is φ = 170731680.

The previous prime is 256212263. The next prime is 256212277. The reversal of 256212267 is 762212652.

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

It is not a de Polignac number, because 256212267 - 2² = 256212263 is a prime.

It is a super-2 number, since 2×256212267² = 131289451522558578, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (256212263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10792 + ... + 25077.

It is an arithmetic number, because the mean of its divisors is an integer number (42721170).

Almost surely, 2^256212267 is an apocalyptic number.

256212267 is a deficient number, since it is larger than the sum of its proper divisors (85557093).

256212267 is a wasteful number, since it uses less digits than its factorization.

256212267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38253.

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

The square root of 256212267 is about 16006.6319692807. The cubic root of 256212267 is about 635.1358685851.

The spelling of 256212267 in words is "two hundred fifty-six million, two hundred twelve thousand, two hundred sixty-seven".