12840804 has 36 divisors (see below), whose sum is σ = 32783296. Its totient is φ = 4237488.

The previous prime is 12840799. The next prime is 12840811. The reversal of 12840804 is 40804821.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1977 + ... + 5439.

Almost surely, 2^12840804 is an apocalyptic number.

It is an amenable number.

12840804 is an abundant number, since it is smaller than the sum of its proper divisors (19942492).

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

12840804 is a wasteful number, since it uses less digits than its factorization.

12840804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3576 (or 3571 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 12840804 is about 3583.4067589376. The cubic root of 12840804 is about 234.1697212712.

The spelling of 12840804 in words is "twelve million, eight hundred forty thousand, eight hundred four".