13404560 has 40 divisors (see below), whose sum is σ = 33565560. Its totient is φ = 4948992.

The previous prime is 13404533. The next prime is 13404563. The reversal of 13404560 is 6540431.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 559504 + 12845056 = 748^2 + 3584^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13404563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5405 + ... + 7484.

It is an arithmetic number, because the mean of its divisors is an integer number (839139).

Almost surely, 2^13404560 is an apocalyptic number.

13404560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13404560 is an abundant number, since it is smaller than the sum of its proper divisors (20161000).

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

13404560 is a wasteful number, since it uses less digits than its factorization.

13404560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12915 (or 12909 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 13404560 is about 3661.2238391008. The cubic root of 13404560 is about 237.5477134055.

Adding to 13404560 its reverse (6540431), we get a palindrome (19944991).

The spelling of 13404560 in words is "thirteen million, four hundred four thousand, five hundred sixty".