13744140 has 48 divisors (see below), whose sum is σ = 38647392. Its totient is φ = 3649536.

The previous prime is 13744139. The next prime is 13744141. The reversal of 13744140 is 4144731.

It is an interprime number because it is at equal distance from previous prime (13744139) and next prime (13744141).

It is a self number, because there is not a number n which added to its sum of digits gives 13744140.

It is not an unprimeable number, because it can be changed into a prime (13744141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23532 + ... + 24108.

It is an arithmetic number, because the mean of its divisors is an integer number (805154).

Almost surely, 2^13744140 is an apocalyptic number.

13744140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13744140 is an abundant number, since it is smaller than the sum of its proper divisors (24903252).

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

13744140 is a wasteful number, since it uses less digits than its factorization.

13744140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986 (or 984 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 13744140 is about 3707.3089971029. The cubic root of 13744140 is about 239.5369544167.

Adding to 13744140 its reverse (4144731), we get a palindrome (17888871).

The spelling of 13744140 in words is "thirteen million, seven hundred forty-four thousand, one hundred forty".