13888040 has 16 divisors (see below), whose sum is σ = 31248180. Its totient is φ = 5555200.

The previous prime is 13888037. The next prime is 13888057. The reversal of 13888040 is 4088831.

13888040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 13823524 + 64516 = 3718^2 + 254^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13887988 and 13888006.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173561 + ... + 173640.

Almost surely, 2^13888040 is an apocalyptic number.

13888040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13888040 is an abundant number, since it is smaller than the sum of its proper divisors (17360140).

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

13888040 is a wasteful number, since it uses less digits than its factorization.

13888040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347212 (or 347208 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 13888040 is about 3726.6660703637. Note that the first 3 decimals coincide. The cubic root of 13888040 is about 240.3700310463.

The spelling of 13888040 in words is "thirteen million, eight hundred eighty-eight thousand, forty".