10812289 has 4 divisors (see below), whose sum is σ = 11448324. Its totient is φ = 10176256.

The previous prime is 10812283. The next prime is 10812317. The reversal of 10812289 is 98221801.

It is a happy number.

10812289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9828225 + 984064 = 3135^2 + 992^2 .

It is a cyclic number.

It is not a de Polignac number, because 10812289 - 2⁵ = 10812257 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10812289.

It is not an unprimeable number, because it can be changed into a prime (10812283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317992 + ... + 318025.

It is an arithmetic number, because the mean of its divisors is an integer number (2862081).

Almost surely, 2^10812289 is an apocalyptic number.

It is an amenable number.

10812289 is a deficient number, since it is larger than the sum of its proper divisors (636035).

10812289 is an equidigital number, since it uses as much as digits as its factorization.

10812289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636034.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 10812289 is about 3288.2045252691. The cubic root of 10812289 is about 221.1256971449.

The spelling of 10812289 in words is "ten million, eight hundred twelve thousand, two hundred eighty-nine".