1256384832 has 28 divisors (see below), whose sum is σ = 3324185376. Its totient is φ = 418794880.

The previous prime is 1256384797. The next prime is 1256384851. The reversal of 1256384832 is 2384836521.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3271644 + ... + 3272027.

Almost surely, 2^1256384832 is an apocalyptic number.

1256384832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1256384832 is an abundant number, since it is smaller than the sum of its proper divisors (2067800544).

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

1256384832 is an equidigital number, since it uses as much as digits as its factorization.

1256384832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6543686 (or 6543676 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

The square root of 1256384832 is about 35445.5192090622. The cubic root of 1256384832 is about 1079.0483248859.

The spelling of 1256384832 in words is "one billion, two hundred fifty-six million, three hundred eighty-four thousand, eight hundred thirty-two".