13728863 has 4 divisors (see below), whose sum is σ = 13781328. Its totient is φ = 13676400.

The previous prime is 13728823. The next prime is 13728881. The reversal of 13728863 is 36882731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36882731 = 23 ⋅1603597.

It is a cyclic number.

It is not a de Polignac number, because 13728863 - 2⁸ = 13728607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13728823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25838 + ... + 26363.

It is an arithmetic number, because the mean of its divisors is an integer number (3445332).

Almost surely, 2^13728863 is an apocalyptic number.

13728863 is a deficient number, since it is larger than the sum of its proper divisors (52465).

13728863 is an equidigital number, since it uses as much as digits as its factorization.

13728863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52464.

The product of its digits is 48384, while the sum is 38.

The square root of 13728863 is about 3705.2480348824. The cubic root of 13728863 is about 239.4481708155.

The spelling of 13728863 in words is "thirteen million, seven hundred twenty-eight thousand, eight hundred sixty-three".