13888575 has 36 divisors (see below), whose sum is σ = 26346528. Its totient is φ = 6969600.

The previous prime is 13888571. The next prime is 13888577. The reversal of 13888575 is 57588831.

It is a happy number.

It is not a de Polignac number, because 13888575 - 2² = 13888571 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 13888575.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13888571) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2010 + ... + 5640.

It is an arithmetic number, because the mean of its divisors is an integer number (731848).

Almost surely, 2^13888575 is an apocalyptic number.

13888575 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13888575 is a deficient number, since it is larger than the sum of its proper divisors (12457953).

13888575 is a wasteful number, since it uses less digits than its factorization.

13888575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3664 (or 3656 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The square root of 13888575 is about 3726.7378496481. The cubic root of 13888575 is about 240.3731175465.

The spelling of 13888575 in words is "thirteen million, eight hundred eighty-eight thousand, five hundred seventy-five".