13600720 has 80 divisors (see below), whose sum is σ = 36604800. Its totient is φ = 4603392.

The previous prime is 13600711. The next prime is 13600757. The reversal of 13600720 is 2700631.

13600720 is a nontrivial binomial coefficient, being equal to C(5216, 2).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83359 + ... + 83521.

It is an arithmetic number, because the mean of its divisors is an integer number (457560).

Almost surely, 2^13600720 is an apocalyptic number.

13600720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13600720 is the 5215-th triangular number and also the 2608-th hexagonal number.

13600720 is the 1739-th centered nonagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13600720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18302400).

13600720 is an abundant number, since it is smaller than the sum of its proper divisors (23004080).

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

13600720 is a wasteful number, since it uses less digits than its factorization.

13600720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 13600720 is about 3687.9154003312. The cubic root of 13600720 is about 238.7008506048.

The spelling of 13600720 in words is "thirteen million, six hundred thousand, seven hundred twenty".