28449250 has 16 divisors (see below), whose sum is σ = 53257464. Its totient is φ = 11379600.

The previous prime is 28449233. The next prime is 28449277. The reversal of 28449250 is 5294482.

It can be written as a sum of positive squares in 4 ways, for example, as 4800481 + 23648769 = 2191^2 + 4863^2 .

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, 56649 + ... + 57148.

Almost surely, 2^28449250 is an apocalyptic number.

28449250 is a deficient number, since it is larger than the sum of its proper divisors (24808214).

28449250 is a wasteful number, since it uses less digits than its factorization.

28449250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113814 (or 113804 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 28449250 is about 5333.7838351399. The cubic root of 28449250 is about 305.2743209667.

The spelling of 28449250 in words is "twenty-eight million, four hundred forty-nine thousand, two hundred fifty".