13440104 has 8 divisors (see below), whose sum is σ = 25200210. Its totient is φ = 6720048.

The previous prime is 13440101. The next prime is 13440109. The reversal of 13440104 is 40104431.

It can be written as a sum of positive squares in only one way, i.e., 8988004 + 4452100 = 2998^2 + 2110^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (13440101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 839999 + ... + 840014.

Almost surely, 2^13440104 is an apocalyptic number.

It is an amenable number.

13440104 is a deficient number, since it is larger than the sum of its proper divisors (11760106).

13440104 is a wasteful number, since it uses less digits than its factorization.

13440104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680019 (or 1680015 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 13440104 is about 3666.0747401001. The cubic root of 13440104 is about 237.7574913707.

Adding to 13440104 its reverse (40104431), we get a palindrome (53544535).

The spelling of 13440104 in words is "thirteen million, four hundred forty thousand, one hundred four".