13809472 has 28 divisors (see below), whose sum is σ = 27635200. Its totient is φ = 6846336.

The previous prime is 13809461. The next prime is 13809479. The reversal of 13809472 is 27490831.

13809472 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13809479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7279 + ... + 8977.

Almost surely, 2^13809472 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 13809472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13817600).

13809472 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13809472 is a wasteful number, since it uses less digits than its factorization.

13809472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838 (or 1828 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 13809472 is about 3716.1097938570. The cubic root of 13809472 is about 239.9158964568.

The spelling of 13809472 in words is "thirteen million, eight hundred nine thousand, four hundred seventy-two".