28746250 has 80 divisors (see below), whose sum is σ = 61011720. Its totient is φ = 10080000.

The previous prime is 28746209. The next prime is 28746253. The reversal of 28746250 is 5264782.

It can be written as a sum of positive squares in 20 ways, for example, as 24196561 + 4549689 = 4919^2 + 2133^2 .

It is not an unprimeable number, because it can be changed into a prime (28746253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 471220 + ... + 471280.

Almost surely, 2^28746250 is an apocalyptic number.

28746250 is an abundant number, since it is smaller than the sum of its proper divisors (32265470).

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

28746250 is a wasteful number, since it uses less digits than its factorization.

28746250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 28746250 is about 5361.5529466751. The cubic root of 28746250 is about 306.3329637786.

The spelling of 28746250 in words is "twenty-eight million, seven hundred forty-six thousand, two hundred fifty".