13218833 has 8 divisors (see below), whose sum is σ = 13488000. Its totient is φ = 12952368.

The previous prime is 13218827. The next prime is 13218839. The reversal of 13218833 is 33881231.

It is an interprime number because it is at equal distance from previous prime (13218827) and next prime (13218839).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13218833 - 2¹² = 13214737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13218796 and 13218805.

It is not an unprimeable number, because it can be changed into a prime (13218839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11210 + ... + 12332.

It is an arithmetic number, because the mean of its divisors is an integer number (1686000).

Almost surely, 2^13218833 is an apocalyptic number.

It is an amenable number.

13218833 is a deficient number, since it is larger than the sum of its proper divisors (269167).

13218833 is a wasteful number, since it uses less digits than its factorization.

13218833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351.

The product of its digits is 3456, while the sum is 29.

The square root of 13218833 is about 3635.7713074395. The cubic root of 13218833 is about 236.4454921932.

The spelling of 13218833 in words is "thirteen million, two hundred eighteen thousand, eight hundred thirty-three".