13888818 has 24 divisors (see below), whose sum is σ = 30170556. Its totient is φ = 4617600.

The previous prime is 13888817. The next prime is 13888841. The reversal of 13888818 is 81888831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13593969 + 294849 = 3687^2 + 543^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13888817) 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, 8638 + ... + 10118.

Almost surely, 2^13888818 is an apocalyptic number.

13888818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13888818 is an abundant number, since it is smaller than the sum of its proper divisors (16281738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13888818 is a wasteful number, since it uses less digits than its factorization.

13888818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010 (or 2007 counting only the distinct ones).

The product of its digits is 98304, while the sum is 45.

The square root of 13888818 is about 3726.7704517450. The cubic root of 13888818 is about 240.3745194260.

It can be divided in two parts, 13888 and 818, that added together give a triangular number (14706 = T₁₇₁).

The spelling of 13888818 in words is "thirteen million, eight hundred eighty-eight thousand, eight hundred eighteen".