12812589 has 12 divisors (see below), whose sum is σ = 18768672. Its totient is φ = 8421000.

The previous prime is 12812567. The next prime is 12812621. The reversal of 12812589 is 98521821.

It is not a de Polignac number, because 12812589 - 2⁸ = 12812333 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12812539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9387 + ... + 10664.

It is an arithmetic number, because the mean of its divisors is an integer number (1564056).

Almost surely, 2^12812589 is an apocalyptic number.

It is an amenable number.

12812589 is a deficient number, since it is larger than the sum of its proper divisors (5956083).

12812589 is a wasteful number, since it uses less digits than its factorization.

12812589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20128 (or 20125 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 12812589 is about 3579.4676978568. The cubic root of 12812589 is about 233.9980823862.

The spelling of 12812589 in words is "twelve million, eight hundred twelve thousand, five hundred eighty-nine".