28497250 has 16 divisors (see below), whose sum is σ = 53347320. Its totient is φ = 11398800.

The previous prime is 28497247. The next prime is 28497257. The reversal of 28497250 is 5279482.

It can be written as a sum of positive squares in 4 ways, for example, as 15816529 + 12680721 = 3977^2 + 3561^2 .

It is not an unprimeable number, because it can be changed into a prime (28497257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56745 + ... + 57244.

Almost surely, 2^28497250 is an apocalyptic number.

28497250 is a deficient number, since it is larger than the sum of its proper divisors (24850070).

28497250 is a wasteful number, since it uses less digits than its factorization.

28497250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114006 (or 113996 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 28497250 is about 5338.2815587041. The cubic root of 28497250 is about 305.4459122987.

The spelling of 28497250 in words is "twenty-eight million, four hundred ninety-seven thousand, two hundred fifty".