256005432 has 48 divisors (see below), whose sum is σ = 694980000. Its totient is φ = 85134336.

The previous prime is 256005403. The next prime is 256005439. The reversal of 256005432 is 234500652.

256005432 is a `hidden beast` number, since 2 + 5 + 600 + 54 + 3 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 256005396 and 256005405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256005439) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 28369 + ... + 36287.

It is an arithmetic number, because the mean of its divisors is an integer number (14478750).

Almost surely, 2^256005432 is an apocalyptic number.

It is an amenable number.

256005432 is an abundant number, since it is smaller than the sum of its proper divisors (438974568).

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

256005432 is a wasteful number, since it uses less digits than its factorization.

256005432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8380 (or 8373 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 256005432 is about 16000.1697490995. The cubic root of 256005432 is about 634.9649117777.

The spelling of 256005432 in words is "two hundred fifty-six million, five thousand, four hundred thirty-two".