12789798 has 32 divisors (see below), whose sum is σ = 29652480. Its totient is φ = 3601920.

The previous prime is 12789773. The next prime is 12789811. The reversal of 12789798 is 89798721.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12789798.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 838 + ... + 5126.

It is an arithmetic number, because the mean of its divisors is an integer number (926640).

Almost surely, 2^12789798 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12789798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14826240).

12789798 is an abundant number, since it is smaller than the sum of its proper divisors (16862682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12789798 is a wasteful number, since it uses less digits than its factorization.

12789798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4372.

The product of its digits is 508032, while the sum is 51.

The square root of 12789798 is about 3576.2827069459. The cubic root of 12789798 is about 233.8592549782.

The spelling of 12789798 in words is "twelve million, seven hundred eighty-nine thousand, seven hundred ninety-eight".