13218860 has 36 divisors (see below), whose sum is σ = 29501472. Its totient is φ = 4974336.

The previous prime is 13218847. The next prime is 13218871. The reversal of 13218860 is 6881231.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 4637 + ... + 6923.

Almost surely, 2^13218860 is an apocalyptic number.

13218860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13218860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14750736).

13218860 is an abundant number, since it is smaller than the sum of its proper divisors (16282612).

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

13218860 is a wasteful number, since it uses less digits than its factorization.

13218860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330 (or 2311 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 13218860 is about 3635.7750205424. The cubic root of 13218860 is about 236.4456531762.

The spelling of 13218860 in words is "thirteen million, two hundred eighteen thousand, eight hundred sixty".