256733432 has 16 divisors (see below), whose sum is σ = 481769640. Its totient is φ = 128261536.

The previous prime is 256733423. The next prime is 256733437. The reversal of 256733432 is 234337652.

It is a junction number, because it is equal to n+sod(n) for n = 256733392 and 256733401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256733437) 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, 2243 + ... + 22770.

Almost surely, 2^256733432 is an apocalyptic number.

It is an amenable number.

256733432 is a deficient number, since it is larger than the sum of its proper divisors (225036208).

256733432 is a wasteful number, since it uses less digits than its factorization.

256733432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26302 (or 26298 counting only the distinct ones).

The product of its digits is 90720, while the sum is 35.

The square root of 256733432 is about 16022.9033573819. The cubic root of 256733432 is about 635.5662232078.

The spelling of 256733432 in words is "two hundred fifty-six million, seven hundred thirty-three thousand, four hundred thirty-two".