28625250 has 32 divisors (see below), whose sum is σ = 71450496. Its totient is φ = 7633200.

The previous prime is 28625249. The next prime is 28625251. The reversal of 28625250 is 5252682.

It is an interprime number because it is at equal distance from previous prime (28625249) and next prime (28625251).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (28625251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18334 + ... + 19833.

It is an arithmetic number, because the mean of its divisors is an integer number (2232828).

Almost surely, 2^28625250 is an apocalyptic number.

28625250 is an abundant number, since it is smaller than the sum of its proper divisors (42825246).

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

28625250 is a wasteful number, since it uses less digits than its factorization.

28625250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38187 (or 38177 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 28625250 is about 5350.2570031728. The cubic root of 28625250 is about 305.9025491726.

The spelling of 28625250 in words is "twenty-eight million, six hundred twenty-five thousand, two hundred fifty".