13040863 has 16 divisors (see below), whose sum is σ = 14837760. Its totient is φ = 11354400.

The previous prime is 13040861. The next prime is 13040873. The reversal of 13040863 is 36804031.

It is a cyclic number.

It is not a de Polignac number, because 13040863 - 2¹ = 13040861 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 (13040861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56833 + ... + 57061.

It is an arithmetic number, because the mean of its divisors is an integer number (927360).

Almost surely, 2^13040863 is an apocalyptic number.

13040863 is a deficient number, since it is larger than the sum of its proper divisors (1796897).

13040863 is a wasteful number, since it uses less digits than its factorization.

13040863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 13040863 is about 3611.2135079499. The cubic root of 13040863 is about 235.3795767013.

Adding to 13040863 its reverse (36804031), we get a palindrome (49844894).

The spelling of 13040863 in words is "thirteen million, forty thousand, eight hundred sixty-three".