10809250 has 16 divisors (see below), whose sum is σ = 20235384. Its totient is φ = 4323600.

The previous prime is 10809221. The next prime is 10809259. The reversal of 10809250 is 5290801.

It can be written as a sum of positive squares in 4 ways, for example, as 741321 + 10067929 = 861^2 + 3173^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (10809259) 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, 21369 + ... + 21868.

Almost surely, 2^10809250 is an apocalyptic number.

10809250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10809250 is a deficient number, since it is larger than the sum of its proper divisors (9426134).

10809250 is an equidigital number, since it uses as much as digits as its factorization.

10809250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43254 (or 43244 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 10809250 is about 3287.7423865017. The cubic root of 10809250 is about 221.1049780057.

The spelling of 10809250 in words is "ten million, eight hundred nine thousand, two hundred fifty".