13840312 has 32 divisors (see below), whose sum is σ = 27702000. Its totient is φ = 6459904.

The previous prime is 13840271. The next prime is 13840327. The reversal of 13840312 is 21304831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19923 + ... + 20605.

Almost surely, 2^13840312 is an apocalyptic number.

It is an amenable number.

13840312 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

13840312 is a wasteful number, since it uses less digits than its factorization.

13840312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855 (or 851 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 13840312 is about 3720.2569803711. The cubic root of 13840312 is about 240.0943610433.

The spelling of 13840312 in words is "thirteen million, eight hundred forty thousand, three hundred twelve".