256767612 has 12 divisors (see below), whose sum is σ = 599124456. Its totient is φ = 85589200.

The previous prime is 256767601. The next prime is 256767613. The reversal of 256767612 is 216767652.

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

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256767613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10698639 + ... + 10698662.

It is an arithmetic number, because the mean of its divisors is an integer number (49927038).

Almost surely, 2^256767612 is an apocalyptic number.

It is an amenable number.

256767612 is an abundant number, since it is smaller than the sum of its proper divisors (342356844).

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

256767612 is a wasteful number, since it uses less digits than its factorization.

256767612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21397308 (or 21397306 counting only the distinct ones).

The product of its digits is 211680, while the sum is 42.

The square root of 256767612 is about 16023.9699200916. The cubic root of 256767612 is about 635.5944271563.

The spelling of 256767612 in words is "two hundred fifty-six million, seven hundred sixty-seven thousand, six hundred twelve".