13218270 has 32 divisors (see below), whose sum is σ = 34165152. Its totient is φ = 3253632.

The previous prime is 13218269. The next prime is 13218311. The reversal of 13218270 is 7281231.

It is a self number, because there is not a number n which added to its sum of digits gives 13218270.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16557 + ... + 17336.

It is an arithmetic number, because the mean of its divisors is an integer number (1067661).

Almost surely, 2^13218270 is an apocalyptic number.

13218270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13218270 is an abundant number, since it is smaller than the sum of its proper divisors (20946882).

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

13218270 is a wasteful number, since it uses less digits than its factorization.

13218270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33916.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 13218270 is about 3635.6938815032. The cubic root of 13218270 is about 236.4421353486.

It can be divided in two parts, 1321 and 8270, that added together give a triangular number (9591 = T₁₃₈).

The spelling of 13218270 in words is "thirteen million, two hundred eighteen thousand, two hundred seventy".