218345330 has 16 divisors (see below), whose sum is σ = 449167680. Its totient is φ = 74861232.

The previous prime is 218345293. The next prime is 218345341. The reversal of 218345330 is 33543812.

218345330 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 218345293 and 218345302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1559540 + ... + 1559679.

It is an arithmetic number, because the mean of its divisors is an integer number (28072980).

Almost surely, 2^218345330 is an apocalyptic number.

218345330 is an abundant number, since it is smaller than the sum of its proper divisors (230822350).

218345330 is a wasteful number, since it uses less digits than its factorization.

218345330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3119233.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 218345330 is about 14776.5127821147. The cubic root of 218345330 is about 602.1637891655.

The spelling of 218345330 in words is "two hundred eighteen million, three hundred forty-five thousand, three hundred thirty".