13870844 has 54 divisors (see below), whose sum is σ = 28315224. Its totient is φ = 5940480.

The previous prime is 13870837. The next prime is 13870849. The reversal of 13870844 is 44807831.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13870849) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 195329 + ... + 195399.

It is an arithmetic number, because the mean of its divisors is an integer number (524356).

Almost surely, 2^13870844 is an apocalyptic number.

It is an amenable number.

13870844 is an abundant number, since it is smaller than the sum of its proper divisors (14444380).

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

13870844 is a wasteful number, since it uses less digits than its factorization.

13870844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 13870844 is about 3724.3581997440. The cubic root of 13870844 is about 240.2707823353.

The spelling of 13870844 in words is "thirteen million, eight hundred seventy thousand, eight hundred forty-four".