28324256 has 12 divisors (see below), whose sum is σ = 55763442. Its totient is φ = 14162112.

The previous prime is 28324253. The next prime is 28324259. The reversal of 28324256 is 65242382.

It is an interprime number because it is at equal distance from previous prime (28324253) and next prime (28324259).

It can be written as a sum of positive squares in only one way, i.e., 28090000 + 234256 = 5300^2 + 484^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 885133 = 28324256 / (2 + 8 + 3 + 2 + 4 + 2 + 5 + 6).

It is not an unprimeable number, because it can be changed into a prime (28324253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 442535 + ... + 442598.

Almost surely, 2^28324256 is an apocalyptic number.

It is an amenable number.

28324256 is a deficient number, since it is larger than the sum of its proper divisors (27439186).

28324256 is an equidigital number, since it uses as much as digits as its factorization.

28324256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885143 (or 885135 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

The square root of 28324256 is about 5322.0537389245. The cubic root of 28324256 is about 304.8265824163.

The spelling of 28324256 in words is "twenty-eight million, three hundred twenty-four thousand, two hundred fifty-six".