13888765 has 16 divisors (see below), whose sum is σ = 18457920. Its totient is φ = 9947520.

The previous prime is 13888759. The next prime is 13888769. The reversal of 13888765 is 56788831.

It is not a de Polignac number, because 13888765 - 2⁹ = 13888253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13888769) 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, 1801 + ... + 5569.

It is an arithmetic number, because the mean of its divisors is an integer number (1153620).

Almost surely, 2^13888765 is an apocalyptic number.

It is an amenable number.

13888765 is a deficient number, since it is larger than the sum of its proper divisors (4569155).

13888765 is a wasteful number, since it uses less digits than its factorization.

13888765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3852.

The product of its digits is 322560, while the sum is 46.

The square root of 13888765 is about 3726.7633410240. The cubic root of 13888765 is about 240.3742136677.

It can be divided in two parts, 1388 and 8765, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 13888765 in words is "thirteen million, eight hundred eighty-eight thousand, seven hundred sixty-five".