256357432 has 16 divisors (see below), whose sum is σ = 481058640. Its totient is φ = 128075136.

The previous prime is 256357403. The next prime is 256357459. The reversal of 256357432 is 234753652.

It is a junction number, because it is equal to n+sod(n) for n = 256357391 and 256357400.

It is a congruent number.

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, 1873 + ... + 22720.

It is an arithmetic number, because the mean of its divisors is an integer number (30066165).

Almost surely, 2^256357432 is an apocalyptic number.

It is an amenable number.

256357432 is a deficient number, since it is larger than the sum of its proper divisors (224701208).

256357432 is a wasteful number, since it uses less digits than its factorization.

256357432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25902 (or 25898 counting only the distinct ones).

The product of its digits is 151200, while the sum is 37.

The square root of 256357432 is about 16011.1658538659. The cubic root of 256357432 is about 635.2557979079.

It can be divided in two parts, 2563 and 57432, that added together give a palindrome (59995).

The spelling of 256357432 in words is "two hundred fifty-six million, three hundred fifty-seven thousand, four hundred thirty-two".