12890904 has 64 divisors (see below), whose sum is σ = 35212800. Its totient is φ = 3908736.

The previous prime is 12890903. The next prime is 12890909. The reversal of 12890904 is 40909821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12890903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24387 + ... + 24909.

It is an arithmetic number, because the mean of its divisors is an integer number (550200).

Almost surely, 2^12890904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12890904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17606400).

12890904 is an abundant number, since it is smaller than the sum of its proper divisors (22321896).

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

12890904 is a wasteful number, since it uses less digits than its factorization.

12890904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 12890904 is about 3590.3905080088. The cubic root of 12890904 is about 234.4738735189.

The spelling of 12890904 in words is "twelve million, eight hundred ninety thousand, nine hundred four".