12890196 has 72 divisors (see below), whose sum is σ = 36420384. Its totient is φ = 3810240.

The previous prime is 12890191. The next prime is 12890209. The reversal of 12890196 is 69109821.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12890196.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12890191) 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, 16650 + ... + 17406.

Almost surely, 2^12890196 is an apocalyptic number.

12890196 is the 2271-st heptagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12890196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18210192).

12890196 is an abundant number, since it is smaller than the sum of its proper divisors (23530188).

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

12890196 is a wasteful number, since it uses less digits than its factorization.

12890196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821 (or 816 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 12890196 is about 3590.2919101377. The cubic root of 12890196 is about 234.4695808139.

The spelling of 12890196 in words is "twelve million, eight hundred ninety thousand, one hundred ninety-six".