13040144 has 40 divisors (see below), whose sum is σ = 27623232. Its totient is φ = 5927040.

The previous prime is 13040141. The next prime is 13040161. The reversal of 13040144 is 44104031.

It is not an unprimeable number, because it can be changed into a prime (13040141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14327 + ... + 15209.

Almost surely, 2^13040144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13040144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13811616).

13040144 is an abundant number, since it is smaller than the sum of its proper divisors (14583088).

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

13040144 is a wasteful number, since it uses less digits than its factorization.

13040144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975 (or 969 counting only the distinct ones).

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

The square root of 13040144 is about 3611.1139555544. The cubic root of 13040144 is about 235.3752507855.

Adding to 13040144 its reverse (44104031), we get a palindrome (57144175).

The spelling of 13040144 in words is "thirteen million, forty thousand, one hundred forty-four".