13521080 has 16 divisors (see below), whose sum is σ = 30422520. Its totient is φ = 5408416.

The previous prime is 13521073. The next prime is 13521083. The reversal of 13521080 is 8012531.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13521083) 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 3 ways as a sum of consecutive naturals, for example, 168974 + ... + 169053.

Almost surely, 2^13521080 is an apocalyptic number.

13521080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13521080 is an abundant number, since it is smaller than the sum of its proper divisors (16901440).

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

13521080 is a wasteful number, since it uses less digits than its factorization.

13521080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338038 (or 338034 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 13521080 is about 3677.1021198765. The cubic root of 13521080 is about 238.2340282111.

The spelling of 13521080 in words is "thirteen million, five hundred twenty-one thousand, eighty".