13781104 has 20 divisors (see below), whose sum is σ = 26900064. Its totient is φ = 6839168.

The previous prime is 13781087. The next prime is 13781107. The reversal of 13781104 is 40118731.

It is a super-3 number, since 3×13781104³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13781107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 952 + ... + 5335.

Almost surely, 2^13781104 is an apocalyptic number.

It is an amenable number.

13781104 is a deficient number, since it is larger than the sum of its proper divisors (13118960).

13781104 is a wasteful number, since it uses less digits than its factorization.

13781104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6432 (or 6426 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 13781104 is about 3712.2909368744. The cubic root of 13781104 is about 239.7515020513.

Adding to 13781104 its reverse (40118731), we get a palindrome (53899835).

The spelling of 13781104 in words is "thirteen million, seven hundred eighty-one thousand, one hundred four".