13860720 has 240 divisors, whose sum is σ = 51996672. Its totient is φ = 3421440.

The previous prime is 13860703. The next prime is 13860727. The reversal of 13860720 is 2706831.

13860720 is a `hidden beast` number, since 1 + 38 + 607 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13860727) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 447105 + ... + 447135.

Almost surely, 2^13860720 is an apocalyptic number.

13860720 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 13860720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25998336).

13860720 is an abundant number, since it is smaller than the sum of its proper divisors (38135952).

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

13860720 is a wasteful number, since it uses less digits than its factorization.

13860720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 13860720 is about 3722.9987912971. The cubic root of 13860720 is about 240.2123121261.

The spelling of 13860720 in words is "thirteen million, eight hundred sixty thousand, seven hundred twenty".