28883250 has 128 divisors (see below), whose sum is σ = 87609600. Its totient is φ = 6984000.

The previous prime is 28883243. The next prime is 28883279. The reversal of 28883250 is 5238882.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 74056 + ... + 74444.

It is an arithmetic number, because the mean of its divisors is an integer number (684450).

Almost surely, 2^28883250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28883250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43804800).

28883250 is an abundant number, since it is smaller than the sum of its proper divisors (58726350).

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

28883250 is a wasteful number, since it uses less digits than its factorization.

28883250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 28883250 is about 5374.3139097005. The cubic root of 28883250 is about 306.8188372601.

It can be divided in two parts, 288832 and 50, that added together give a palindrome (288882).

The spelling of 28883250 in words is "twenty-eight million, eight hundred eighty-three thousand, two hundred fifty".