13500880 has 20 divisors (see below), whose sum is σ = 31389732. Its totient is φ = 5400320.

The previous prime is 13500869. The next prime is 13500881. The reversal of 13500880 is 8800531.

It can be written as a sum of positive squares in 2 ways, for example, as 4112784 + 9388096 = 2028^2 + 3064^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13500881) 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, 84301 + ... + 84460.

Almost surely, 2^13500880 is an apocalyptic number.

13500880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13500880 is an abundant number, since it is smaller than the sum of its proper divisors (17888852).

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

13500880 is a wasteful number, since it uses less digits than its factorization.

13500880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168774 (or 168768 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 13500880 is about 3674.3543650552. The cubic root of 13500880 is about 238.1153314344.

The spelling of 13500880 in words is "thirteen million, five hundred thousand, eight hundred eighty".