13104240 has 40 divisors (see below), whose sum is σ = 40623888. Its totient is φ = 3494400.

The previous prime is 13104209. The next prime is 13104251. The reversal of 13104240 is 4240131.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×13104240² = 343442211955200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 27061 + ... + 27540.

Almost surely, 2^13104240 is an apocalyptic number.

13104240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13104240 is an abundant number, since it is smaller than the sum of its proper divisors (27519648).

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

13104240 is a wasteful number, since it uses less digits than its factorization.

13104240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54617 (or 54611 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 13104240 is about 3619.9779004850. The cubic root of 13104240 is about 235.7602659875.

Adding to 13104240 its reverse (4240131), we get a palindrome (17344371).

The spelling of 13104240 in words is "thirteen million, one hundred four thousand, two hundred forty".