256761412 has 12 divisors (see below), whose sum is σ = 450770236. Its totient is φ = 127969920.

The previous prime is 256761391. The next prime is 256761433. The reversal of 256761412 is 214167652.

It is an interprime number because it is at equal distance from previous prime (256761391) and next prime (256761433).

It can be written as a sum of positive squares in 2 ways, for example, as 91278916 + 165482496 = 9554^2 + 12864^2 .

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

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, 101289 + ... + 103792.

Almost surely, 2^256761412 is an apocalyptic number.

It is an amenable number.

256761412 is a deficient number, since it is larger than the sum of its proper divisors (194008824).

256761412 is a wasteful number, since it uses less digits than its factorization.

256761412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205398 (or 205396 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 256761412 is about 16023.7764587503. The cubic root of 256761412 is about 635.5893113538.

The spelling of 256761412 in words is "two hundred fifty-six million, seven hundred sixty-one thousand, four hundred twelve".