28064250 has 48 divisors (see below), whose sum is σ = 75891816. Its totient is φ = 7483200.

The previous prime is 28064249. The next prime is 28064287. The reversal of 28064250 is 5246082.

It can be written as a sum of positive squares in 4 ways, for example, as 10949481 + 17114769 = 3309^2 + 4137^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3987 + ... + 8486.

Almost surely, 2^28064250 is an apocalyptic number.

28064250 is an abundant number, since it is smaller than the sum of its proper divisors (47827566).

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

28064250 is a wasteful number, since it uses less digits than its factorization.

28064250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12496 (or 12483 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 28064250 is about 5297.5701977416. The cubic root of 28064250 is about 303.8909826667.

It can be divided in two parts, 2806 and 4250, that added together give a square (7056 = 84²).

The spelling of 28064250 in words is "twenty-eight million, sixty-four thousand, two hundred fifty".