256342828 has 12 divisors (see below), whose sum is σ = 512685712. Its totient is φ = 109861200.

The previous prime is 256342817. The next prime is 256342883. The reversal of 256342828 is 828243652.

It is a happy number.

256342828 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4577523 + ... + 4577578.

Almost surely, 2^256342828 is an apocalyptic number.

256342828 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

256342828 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

256342828 is a wasteful number, since it uses less digits than its factorization.

256342828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9155112 (or 9155110 counting only the distinct ones).

The product of its digits is 184320, while the sum is 40.

The square root of 256342828 is about 16010.7097906370. The cubic root of 256342828 is about 635.2437347353.

The spelling of 256342828 in words is "two hundred fifty-six million, three hundred forty-two thousand, eight hundred twenty-eight".