28345250 has 16 divisors (see below), whose sum is σ = 53062776. Its totient is φ = 11338000.

The previous prime is 28345241. The next prime is 28345327. The reversal of 28345250 is 5254382.

It can be written as a sum of positive squares in 4 ways, for example, as 16394401 + 11950849 = 4049^2 + 3457^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56441 + ... + 56940.

Almost surely, 2^28345250 is an apocalyptic number.

28345250 is a deficient number, since it is larger than the sum of its proper divisors (24717526).

28345250 is a wasteful number, since it uses less digits than its factorization.

28345250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113398 (or 113388 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 28345250 is about 5324.0257324697. The cubic root of 28345250 is about 304.9018765247.

The spelling of 28345250 in words is "twenty-eight million, three hundred forty-five thousand, two hundred fifty".