28993250 has 64 divisors (see below), whose sum is σ = 63842688. Its totient is φ = 9720000.

The previous prime is 28993241. The next prime is 28993267. The reversal of 28993250 is 5239982.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35345 + ... + 36155.

It is an arithmetic number, because the mean of its divisors is an integer number (997542).

Almost surely, 2^28993250 is an apocalyptic number.

28993250 is an abundant number, since it is smaller than the sum of its proper divisors (34849438).

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

28993250 is a wasteful number, since it uses less digits than its factorization.

28993250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852 (or 842 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 28993250 is about 5384.5380488952. The cubic root of 28993250 is about 307.2078437780.

It can be divided in two parts, 289932 and 50, that added together give a palindrome (289982).

The spelling of 28993250 in words is "twenty-eight million, nine hundred ninety-three thousand, two hundred fifty".