256535492 has 12 divisors (see below), whose sum is σ = 472565520. Its totient is φ = 121516776.

The previous prime is 256535471. The next prime is 256535497. The reversal of 256535492 is 294535652.

It is not an unprimeable number, because it can be changed into a prime (256535497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1687658 + ... + 1687809.

It is an arithmetic number, because the mean of its divisors is an integer number (39380460).

Almost surely, 2^256535492 is an apocalyptic number.

It is an amenable number.

256535492 is a deficient number, since it is larger than the sum of its proper divisors (216030028).

256535492 is a wasteful number, since it uses less digits than its factorization.

256535492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3375490 (or 3375488 counting only the distinct ones).

The product of its digits is 324000, while the sum is 41.

The square root of 256535492 is about 16016.7253831737. The cubic root of 256535492 is about 635.4028419106.

The spelling of 256535492 in words is "two hundred fifty-six million, five hundred thirty-five thousand, four hundred ninety-two".