13172863 has 8 divisors (see below), whose sum is σ = 14405760. Its totient is φ = 11945880.

The previous prime is 13172839. The next prime is 13172869. The reversal of 13172863 is 36827131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13172863 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 (13172869) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4128 + ... + 6586.

It is an arithmetic number, because the mean of its divisors is an integer number (1800720).

Almost surely, 2^13172863 is an apocalyptic number.

13172863 is a deficient number, since it is larger than the sum of its proper divisors (1232897).

13172863 is a wasteful number, since it uses less digits than its factorization.

13172863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2957.

The product of its digits is 6048, while the sum is 31.

The square root of 13172863 is about 3629.4438967974. The cubic root of 13172863 is about 236.1710851273.

Adding to 13172863 its reverse (36827131), we get a palindrome (49999994).

The spelling of 13172863 in words is "thirteen million, one hundred seventy-two thousand, eight hundred sixty-three".