256266012 has 12 divisors (see below), whose sum is σ = 597954056. Its totient is φ = 85422000.

The previous prime is 256265993. The next prime is 256266029. The reversal of 256266012 is 210662652.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10677739 + ... + 10677762.

Almost surely, 2^256266012 is an apocalyptic number.

It is an amenable number.

256266012 is an abundant number, since it is smaller than the sum of its proper divisors (341688044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256266012 is a wasteful number, since it uses less digits than its factorization.

256266012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21355508 (or 21355506 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 256266012 is about 16008.3107166247. The cubic root of 256266012 is about 635.1802757624.

The spelling of 256266012 in words is "two hundred fifty-six million, two hundred sixty-six thousand, twelve".