13140636 has 48 divisors (see below), whose sum is σ = 32707584. Its totient is φ = 4096576.

The previous prime is 13140607. The next prime is 13140649. The reversal of 13140636 is 63604131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12466 + ... + 13478.

It is an arithmetic number, because the mean of its divisors is an integer number (681408).

Almost surely, 2^13140636 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 13140636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16353792).

13140636 is an abundant number, since it is smaller than the sum of its proper divisors (19566948).

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

13140636 is a wasteful number, since it uses less digits than its factorization.

13140636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090 (or 1088 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 13140636 is about 3625.0015172411. The cubic root of 13140636 is about 235.9783327805.

Adding to 13140636 its reverse (63604131), we get a palindrome (76744767).

The spelling of 13140636 in words is "thirteen million, one hundred forty thousand, six hundred thirty-six".