13481040 has 40 divisors (see below), whose sum is σ = 41791968. Its totient is φ = 3594880.

The previous prime is 13481021. The next prime is 13481047. The reversal of 13481040 is 4018431.

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

It is a junction number, because it is equal to n+sod(n) for n = 13480998 and 13481016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13481047) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 27846 + ... + 28325.

Almost surely, 2^13481040 is an apocalyptic number.

13481040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13481040 is an abundant number, since it is smaller than the sum of its proper divisors (28310928).

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

13481040 is a wasteful number, since it uses less digits than its factorization.

13481040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56187 (or 56181 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 13481040 is about 3671.6535784303. The cubic root of 13481040 is about 237.9986347402.

Adding to 13481040 its reverse (4018431), we get a palindrome (17499471).

The spelling of 13481040 in words is "thirteen million, four hundred eighty-one thousand, forty".