28869250 has 32 divisors (see below), whose sum is σ = 55521648. Its totient is φ = 11232000.

The previous prime is 28869223. The next prime is 28869263. The reversal of 28869250 is 5296882.

It can be written as a sum of positive squares in 8 ways, for example, as 21609 + 28847641 = 147^2 + 5371^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7690 + ... + 10810.

Almost surely, 2^28869250 is an apocalyptic number.

28869250 is a deficient number, since it is larger than the sum of its proper divisors (26652398).

28869250 is a wasteful number, since it uses less digits than its factorization.

28869250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3175 (or 3165 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 28869250 is about 5373.0112599919. The cubic root of 28869250 is about 306.7692565293.

The spelling of 28869250 in words is "twenty-eight million, eight hundred sixty-nine thousand, two hundred fifty".