13440015 has 12 divisors (see below), whose sum is σ = 23296104. Its totient is φ = 7167984.

The previous prime is 13440001. The next prime is 13440041. The reversal of 13440015 is 51004431.

It is a happy number.

13440015 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13440015 - 2¹¹ = 13437967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13440015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149289 + ... + 149378.

It is an arithmetic number, because the mean of its divisors is an integer number (1941342).

Almost surely, 2^13440015 is an apocalyptic number.

13440015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13440015 is a deficient number, since it is larger than the sum of its proper divisors (9856089).

13440015 is a wasteful number, since it uses less digits than its factorization.

13440015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298678 (or 298675 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 13440015 is about 3666.0626017568. The cubic root of 13440015 is about 237.7569665617.

Adding to 13440015 its reverse (51004431), we get a palindrome (64444446).

The spelling of 13440015 in words is "thirteen million, four hundred forty thousand, fifteen".