28316250 has 80 divisors (see below), whose sum is σ = 78724800. Its totient is φ = 7542000.

The previous prime is 28316219. The next prime is 28316279. The reversal of 28316250 is 5261382.

28316250 is a `hidden beast` number, since 2 + 8 + 31 + 625 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 33331 + ... + 34169.

It is an arithmetic number, because the mean of its divisors is an integer number (984060).

Almost surely, 2^28316250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28316250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39362400).

28316250 is an abundant number, since it is smaller than the sum of its proper divisors (50408550).

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

28316250 is an equidigital number, since it uses as much as digits as its factorization.

28316250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870 (or 849 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 28316250 is about 5321.3015325200. The cubic root of 28316250 is about 304.7978594307.

The spelling of 28316250 in words is "twenty-eight million, three hundred sixteen thousand, two hundred fifty".