13218080 has 24 divisors (see below), whose sum is σ = 31228092. Its totient is φ = 5287168.

The previous prime is 13218047. The next prime is 13218083. The reversal of 13218080 is 8081231.

It can be written as a sum of positive squares in 2 ways, for example, as 13162384 + 55696 = 3628^2 + 236^2 .

It is not an unprimeable number, because it can be changed into a prime (13218083) 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, 41147 + ... + 41466.

Almost surely, 2^13218080 is an apocalyptic number.

13218080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13218080 is an abundant number, since it is smaller than the sum of its proper divisors (18010012).

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

13218080 is an equidigital number, since it uses as much as digits as its factorization.

13218080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82628 (or 82620 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 13218080 is about 3635.6677515967. The cubic root of 13218080 is about 236.4410024666.

The spelling of 13218080 in words is "thirteen million, two hundred eighteen thousand, eighty".