28500250 has 16 divisors (see below), whose sum is σ = 53352936. Its totient is φ = 11400000.

The previous prime is 28500239. The next prime is 28500287. The reversal of 28500250 is 5200582.

It can be written as a sum of positive squares in 4 ways, for example, as 11269449 + 17230801 = 3357^2 + 4151^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56751 + ... + 57250.

Almost surely, 2^28500250 is an apocalyptic number.

28500250 is a deficient number, since it is larger than the sum of its proper divisors (24852686).

28500250 is a wasteful number, since it uses less digits than its factorization.

28500250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114018 (or 114008 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 28500250 is about 5338.5625406096. The cubic root of 28500250 is about 305.4566303573.

The spelling of 28500250 in words is "twenty-eight million, five hundred thousand, two hundred fifty".