13906944 has 88 divisors (see below), whose sum is σ = 41267520. Its totient is φ = 4626432.

The previous prime is 13906943. The next prime is 13906999. The reversal of 13906944 is 44960931.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 13906899 and 13906908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13906943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27397 + ... + 27899.

Almost surely, 2^13906944 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 13906944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20633760).

13906944 is an abundant number, since it is smaller than the sum of its proper divisors (27360576).

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

13906944 is an equidigital number, since it uses as much as digits as its factorization.

13906944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 13906944 is about 3729.2015231146. The cubic root of 13906944 is about 240.4790431873.

The spelling of 13906944 in words is "thirteen million, nine hundred six thousand, nine hundred forty-four".