13810040 has 32 divisors (see below), whose sum is σ = 31542480. Its totient is φ = 5440512.

The previous prime is 13810037. The next prime is 13810079. The reversal of 13810040 is 4001831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104 + ... + 5256.

Almost surely, 2^13810040 is an apocalyptic number.

13810040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13810040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15771240).

13810040 is an abundant number, since it is smaller than the sum of its proper divisors (17732440).

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

13810040 is a wasteful number, since it uses less digits than its factorization.

13810040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5231 (or 5227 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 13810040 is about 3716.1862170779. The cubic root of 13810040 is about 239.9191857538.

Adding to 13810040 its reverse (4001831), we get a palindrome (17811871).

The spelling of 13810040 in words is "thirteen million, eight hundred ten thousand, forty".