12282789 has 24 divisors (see below), whose sum is σ = 17997568. Its totient is φ = 7441920.

The previous prime is 12282769. The next prime is 12282833. The reversal of 12282789 is 98728221.

It is not a de Polignac number, because 12282789 - 2⁷ = 12282661 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12282719) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26649 + ... + 27105.

Almost surely, 2^12282789 is an apocalyptic number.

It is an amenable number.

12282789 is a deficient number, since it is larger than the sum of its proper divisors (5714779).

12282789 is a wasteful number, since it uses less digits than its factorization.

12282789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525 (or 508 counting only the distinct ones).

The product of its digits is 32256, while the sum is 39.

The square root of 12282789 is about 3504.6810125887. The cubic root of 12282789 is about 230.7273070081.

The spelling of 12282789 in words is "twelve million, two hundred eighty-two thousand, seven hundred eighty-nine".