256483400 has 24 divisors (see below), whose sum is σ = 596324370. Its totient is φ = 102593280.

The previous prime is 256483391. The next prime is 256483411. The reversal of 256483400 is 4384652.

It can be written as a sum of positive squares in 3 ways, for example, as 195049156 + 61434244 = 13966^2 + 7838^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 641009 + ... + 641408.

Almost surely, 2^256483400 is an apocalyptic number.

256483400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256483400 is an abundant number, since it is smaller than the sum of its proper divisors (339840970).

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

256483400 is a wasteful number, since it uses less digits than its factorization.

256483400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282433 (or 1282424 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 256483400 is about 16015.0991255128. The cubic root of 256483400 is about 635.3598307789.

The spelling of 256483400 in words is "two hundred fifty-six million, four hundred eighty-three thousand, four hundred".