12840084 has 36 divisors (see below), whose sum is σ = 32800404. Its totient is φ = 4234752.

The previous prime is 12840031. The next prime is 12840089. The reversal of 12840084 is 48004821.

12840084 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8122500 + 4717584 = 2850^2 + 2172^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12840089) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1654 + ... + 5330.

Almost surely, 2^12840084 is an apocalyptic number.

It is an amenable number.

12840084 is an abundant number, since it is smaller than the sum of its proper divisors (19960320).

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

12840084 is a wasteful number, since it uses less digits than its factorization.

12840084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3784 (or 3779 counting only the distinct ones).

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

The square root of 12840084 is about 3583.3062944716. The cubic root of 12840084 is about 234.1653444594.

The spelling of 12840084 in words is "twelve million, eight hundred forty thousand, eighty-four".