28669250 has 32 divisors (see below), whose sum is σ = 54997488. Its totient is φ = 11184000.

The previous prime is 28669243. The next prime is 28669253. The reversal of 28669250 is 5296682.

It can be written as a sum of positive squares in 8 ways, for example, as 14641 + 28654609 = 121^2 + 5353^2 .

It is not an unprimeable number, because it can be changed into a prime (28669253) 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 15 ways as a sum of consecutive naturals, for example, 8852 + ... + 11648.

Almost surely, 2^28669250 is an apocalyptic number.

28669250 is a deficient number, since it is larger than the sum of its proper divisors (26328238).

28669250 is a wasteful number, since it uses less digits than its factorization.

28669250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2855 (or 2845 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 28669250 is about 5354.3673762640. The cubic root of 28669250 is about 306.0592036615.

The spelling of 28669250 in words is "twenty-eight million, six hundred sixty-nine thousand, two hundred fifty".