13888845 has 12 divisors (see below), whose sum is σ = 24074076. Its totient is φ = 7407360.

The previous prime is 13888843. The next prime is 13888879. The reversal of 13888845 is 54888831.

It can be written as a sum of positive squares in 2 ways, for example, as 3526884 + 10361961 = 1878^2 + 3219^2 .

It is not a de Polignac number, because 13888845 - 2¹ = 13888843 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 308641 = 13888845 / (1 + 3 + 8 + 8 + 8 + 8 + 4 + 5).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13888845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13888841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154276 + ... + 154365.

It is an arithmetic number, because the mean of its divisors is an integer number (2006173).

Almost surely, 2^13888845 is an apocalyptic number.

13888845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13888845 is a deficient number, since it is larger than the sum of its proper divisors (10185231).

13888845 is a wasteful number, since it uses less digits than its factorization.

13888845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308652 (or 308649 counting only the distinct ones).

The product of its digits is 245760, while the sum is 45.

The square root of 13888845 is about 3726.7740741827. The cubic root of 13888845 is about 240.3746751894.

The spelling of 13888845 in words is "thirteen million, eight hundred eighty-eight thousand, eight hundred forty-five".