13040412 has 72 divisors (see below), whose sum is σ = 38252928. Its totient is φ = 3384480.

The previous prime is 13040381. The next prime is 13040449. The reversal of 13040412 is 21404031.

It is a junction number, because it is equal to n+sod(n) for n = 13040391 and 13040400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9523 + ... + 10805.

Almost surely, 2^13040412 is an apocalyptic number.

13040412 is a gapful number since it is divisible by the number (12) 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 13040412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19126464).

13040412 is an abundant number, since it is smaller than the sum of its proper divisors (25212516).

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

13040412 is a wasteful number, since it uses less digits than its factorization.

13040412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319 (or 1306 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 13040412 is about 3611.1510630269. The cubic root of 13040412 is about 235.3768632456.

Adding to 13040412 its reverse (21404031), we get a palindrome (34444443).

The spelling of 13040412 in words is "thirteen million, forty thousand, four hundred twelve".