13187240 has 128 divisors (see below), whose sum is σ = 35925120. Its totient is φ = 4300800.

The previous prime is 13187227. The next prime is 13187243. The reversal of 13187240 is 4278131.

It is not an unprimeable number, because it can be changed into a prime (13187243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 306659 + ... + 306701.

It is an arithmetic number, because the mean of its divisors is an integer number (280665).

Almost surely, 2^13187240 is an apocalyptic number.

13187240 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 13187240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17962560).

13187240 is an abundant number, since it is smaller than the sum of its proper divisors (22737880).

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

13187240 is a wasteful number, since it uses less digits than its factorization.

13187240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 13187240 is about 3631.4239631307. The cubic root of 13187240 is about 236.2569737497.

It can be divided in two parts, 1318 and 7240, that added together give a palindrome (8558).

The spelling of 13187240 in words is "thirteen million, one hundred eighty-seven thousand, two hundred forty".