13809960 has 128 divisors (see below), whose sum is σ = 48528000. Its totient is φ = 3483648.

The previous prime is 13809949. The next prime is 13809977. The reversal of 13809960 is 6990831.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 20184 + ... + 20856.

It is an arithmetic number, because the mean of its divisors is an integer number (379125).

Almost surely, 2^13809960 is an apocalyptic number.

13809960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13809960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24264000).

13809960 is an abundant number, since it is smaller than the sum of its proper divisors (34718040).

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

13809960 is a wasteful number, since it uses less digits than its factorization.

13809960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712 (or 702 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 13809960 is about 3716.1754533391. The cubic root of 13809960 is about 239.9187224780.

The spelling of 13809960 in words is "thirteen million, eight hundred nine thousand, nine hundred sixty".