256257332 has 48 divisors (see below), whose sum is σ = 486077760. Its totient is φ = 117831168.

The previous prime is 256257317. The next prime is 256257367. The reversal of 256257332 is 233752652.

256257332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 256257292 and 256257301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454883 + ... + 455445.

It is an arithmetic number, because the mean of its divisors is an integer number (10126620).

Almost surely, 2^256257332 is an apocalyptic number.

It is an amenable number.

256257332 is a deficient number, since it is larger than the sum of its proper divisors (229820428).

256257332 is a wasteful number, since it uses less digits than its factorization.

256257332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752 (or 750 counting only the distinct ones).

The product of its digits is 75600, while the sum is 35.

The square root of 256257332 is about 16008.0396051484. The cubic root of 256257332 is about 635.1731042729.

The spelling of 256257332 in words is "two hundred fifty-six million, two hundred fifty-seven thousand, three hundred thirty-two".