28325250 has 48 divisors (see below), whose sum is σ = 76597560. Its totient is φ = 7552800.

The previous prime is 28325249. The next prime is 28325279. The reversal of 28325250 is 5252382.

It can be written as a sum of positive squares in 4 ways, for example, as 2893401 + 25431849 = 1701^2 + 5043^2 .

It is a Curzon number.

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, 4045 + ... + 8544.

Almost surely, 2^28325250 is an apocalyptic number.

28325250 is an abundant number, since it is smaller than the sum of its proper divisors (48272310).

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

28325250 is a wasteful number, since it uses less digits than its factorization.

28325250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12612 (or 12599 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 28325250 is about 5322.1471231074. The cubic root of 28325250 is about 304.8301481949.

The spelling of 28325250 in words is "twenty-eight million, three hundred twenty-five thousand, two hundred fifty".