13909672 has 64 divisors (see below), whose sum is σ = 33264000. Its totient is φ = 5308416.

The previous prime is 13909661. The next prime is 13909673. The reversal of 13909672 is 27690931.

13909672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13909673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17704 + ... + 18472.

It is an arithmetic number, because the mean of its divisors is an integer number (519750).

Almost surely, 2^13909672 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 13909672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16632000).

13909672 is an abundant number, since it is smaller than the sum of its proper divisors (19354328).

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

13909672 is a wasteful number, since it uses less digits than its factorization.

13909672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818 (or 814 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 13909672 is about 3729.5672671236. The cubic root of 13909672 is about 240.4947663622.

The spelling of 13909672 in words is "thirteen million, nine hundred nine thousand, six hundred seventy-two".