12840696 has 96 divisors (see below), whose sum is σ = 39237120. Its totient is φ = 3758400.

The previous prime is 12840691. The next prime is 12840697. The reversal of 12840696 is 69604821.

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 12840696.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12840691) 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, 24291 + ... + 24813.

It is an arithmetic number, because the mean of its divisors is an integer number (408720).

Almost surely, 2^12840696 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 12840696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19618560).

12840696 is an abundant number, since it is smaller than the sum of its proper divisors (26396424).

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

12840696 is a wasteful number, since it uses less digits than its factorization.

12840696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577 (or 570 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 12840696 is about 3583.3916894473. The cubic root of 12840696 is about 234.1690647599.

The spelling of 12840696 in words is "twelve million, eight hundred forty thousand, six hundred ninety-six".