13968720 has 160 divisors (see below), whose sum is σ = 49996800. Its totient is φ = 3580416.

The previous prime is 13968709. The next prime is 13968727. The reversal of 13968720 is 2786931.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13968727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62529 + ... + 62751.

It is an arithmetic number, because the mean of its divisors is an integer number (312480).

Almost surely, 2^13968720 is an apocalyptic number.

13968720 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 13968720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24998400).

13968720 is an abundant number, since it is smaller than the sum of its proper divisors (36028080).

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

13968720 is a wasteful number, since it uses less digits than its factorization.

13968720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 13968720 is about 3737.4750835290. The cubic root of 13968720 is about 240.8345943536.

The spelling of 13968720 in words is "thirteen million, nine hundred sixty-eight thousand, seven hundred twenty".