10812889 has 4 divisors (see below), whose sum is σ = 11076660. Its totient is φ = 10549120.

The previous prime is 10812887. The next prime is 10812913. The reversal of 10812889 is 98821801.

10812889 = T₄₇₂ + T₄₇₃ + ... + T₅₅₃.

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 2449225 + 8363664 = 1565^2 + 2892^2 .

It is a cyclic number.

It is not a de Polignac number, because 10812889 - 2¹ = 10812887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10812883) 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, 131824 + ... + 131905.

It is an arithmetic number, because the mean of its divisors is an integer number (2769165).

Almost surely, 2^10812889 is an apocalyptic number.

It is an amenable number.

10812889 is a deficient number, since it is larger than the sum of its proper divisors (263771).

10812889 is an equidigital number, since it uses as much as digits as its factorization.

10812889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263770.

The product of its (nonzero) digits is 9216, while the sum is 37.

The square root of 10812889 is about 3288.2957592042. The cubic root of 10812889 is about 221.1297873354.

The spelling of 10812889 in words is "ten million, eight hundred twelve thousand, eight hundred eighty-nine".