13144040 has 128 divisors (see below), whose sum is σ = 38223360. Its totient is φ = 3953664.

The previous prime is 13144007. The next prime is 13144049. The reversal of 13144040 is 4044131.

13144040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13144049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83642 + ... + 83798.

It is an arithmetic number, because the mean of its divisors is an integer number (298620).

Almost surely, 2^13144040 is an apocalyptic number.

13144040 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 13144040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19111680).

13144040 is an abundant number, since it is smaller than the sum of its proper divisors (25079320).

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

13144040 is a wasteful number, since it uses less digits than its factorization.

13144040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 13144040 is about 3625.4710038835. The cubic root of 13144040 is about 235.9987072609.

Adding to 13144040 its reverse (4044131), we get a palindrome (17188171).

Subtracting from 13144040 its reverse (4044131), we obtain a palindrome (9099909).

The spelling of 13144040 in words is "thirteen million, one hundred forty-four thousand, forty".