28523250 has 96 divisors (see below), whose sum is σ = 88193664. Its totient is φ = 6516000.

The previous prime is 28523239. The next prime is 28523273. The reversal of 28523250 is 5232582.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14845 + ... + 16655.

It is an arithmetic number, because the mean of its divisors is an integer number (918684).

Almost surely, 2^28523250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28523250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44096832).

28523250 is an abundant number, since it is smaller than the sum of its proper divisors (59670414).

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

28523250 is a wasteful number, since it uses less digits than its factorization.

28523250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841 (or 1828 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 28523250 is about 5340.7162441006. The cubic root of 28523250 is about 305.5387771626.

The spelling of 28523250 in words is "twenty-eight million, five hundred twenty-three thousand, two hundred fifty".