256553228 has 12 divisors (see below), whose sum is σ = 451942512. Its totient is φ = 127426800.

The previous prime is 256553207. The next prime is 256553233. The reversal of 256553228 is 822355652.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 256553191 and 256553200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211775 + ... + 212982.

It is an arithmetic number, because the mean of its divisors is an integer number (37661876).

Almost surely, 2^256553228 is an apocalyptic number.

It is an amenable number.

256553228 is a deficient number, since it is larger than the sum of its proper divisors (195389284).

256553228 is a wasteful number, since it uses less digits than its factorization.

256553228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424912 (or 424910 counting only the distinct ones).

The product of its digits is 144000, while the sum is 38.

The square root of 256553228 is about 16017.2790448316. The cubic root of 256553228 is about 635.4174847774.

The spelling of 256553228 in words is "two hundred fifty-six million, five hundred fifty-three thousand, two hundred twenty-eight".