13044240 has 240 divisors, whose sum is σ = 50371776. Its totient is φ = 3110400.

The previous prime is 13044223. The next prime is 13044247. The reversal of 13044240 is 4244031.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (13044247) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 213810 + ... + 213870.

Almost surely, 2^13044240 is an apocalyptic number.

13044240 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 13044240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25185888).

13044240 is an abundant number, since it is smaller than the sum of its proper divisors (37327536).

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

13044240 is a wasteful number, since it uses less digits than its factorization.

13044240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 13044240 is about 3611.6810490407. The cubic root of 13044240 is about 235.3998925405.

Adding to 13044240 its reverse (4244031), we get a palindrome (17288271).

The spelling of 13044240 in words is "thirteen million, forty-four thousand, two hundred forty".