28003875250 has 64 divisors (see below), whose sum is σ = 56638239840. Its totient is φ = 10306483200.

The previous prime is 28003875233. The next prime is 28003875253. The reversal of 28003875250 is 5257830082.

It can be written as a sum of positive squares in 16 ways, for example, as 15450241401 + 12553633849 = 124299^2 + 112043^2 .

It is not an unprimeable number, because it can be changed into a prime (28003875253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1003486 + ... + 1031014.

Almost surely, 2^28003875250 is an apocalyptic number.

28003875250 is an abundant number, since it is smaller than the sum of its proper divisors (28634364590).

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

28003875250 is a wasteful number, since it uses less digits than its factorization.

28003875250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27872 (or 27862 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The spelling of 28003875250 in words is "twenty-eight billion, three million, eight hundred seventy-five thousand, two hundred fifty".