13744040 has 16 divisors (see below), whose sum is σ = 30924180. Its totient is φ = 5497600.

The previous prime is 13744039. The next prime is 13744063. The reversal of 13744040 is 4044731.

It can be written as a sum of positive squares in 2 ways, for example, as 13734436 + 9604 = 3706^2 + 98^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13743997 and 13744015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171761 + ... + 171840.

Almost surely, 2^13744040 is an apocalyptic number.

13744040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13744040 is an abundant number, since it is smaller than the sum of its proper divisors (17180140).

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

13744040 is a wasteful number, since it uses less digits than its factorization.

13744040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343612 (or 343608 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 13744040 is about 3707.2955102069. The cubic root of 13744040 is about 239.5363734721.

Adding to 13744040 its reverse (4044731), we get a palindrome (17788771).

The spelling of 13744040 in words is "thirteen million, seven hundred forty-four thousand, forty".