256228828 has 24 divisors (see below), whose sum is σ = 477710352. Its totient is φ = 119833344.

The previous prime is 256228823. The next prime is 256228831. The reversal of 256228828 is 828822652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256228823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475 + ... + 22642.

It is an arithmetic number, because the mean of its divisors is an integer number (19904598).

Almost surely, 2^256228828 is an apocalyptic number.

It is an amenable number.

256228828 is a deficient number, since it is larger than the sum of its proper divisors (221481524).

256228828 is a wasteful number, since it uses less digits than its factorization.

256228828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23301 (or 23299 counting only the distinct ones).

The product of its digits is 245760, while the sum is 43.

The square root of 256228828 is about 16007.1492777446. The cubic root of 256228828 is about 635.1495528876.

The spelling of 256228828 in words is "two hundred fifty-six million, two hundred twenty-eight thousand, eight hundred twenty-eight".