13240136 has 48 divisors (see below), whose sum is σ = 30744000. Its totient is φ = 5234112.

The previous prime is 13240109. The next prime is 13240141. The reversal of 13240136 is 63104231.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8765 + ... + 10163.

It is an arithmetic number, because the mean of its divisors is an integer number (640500).

Almost surely, 2^13240136 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 13240136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15372000).

13240136 is an abundant number, since it is smaller than the sum of its proper divisors (17503864).

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

13240136 is a wasteful number, since it uses less digits than its factorization.

13240136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438 (or 1421 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 13240136 is about 3638.6997677742. The cubic root of 13240136 is about 236.5724397315.

Adding to 13240136 its reverse (63104231), we get a palindrome (76344367).

The spelling of 13240136 in words is "thirteen million, two hundred forty thousand, one hundred thirty-six".