218070 has 24 divisors (see below), whose sum is σ = 567216. Its totient is φ = 58128.

The previous prime is 218069. The next prime is 218077. The reversal of 218070 is 70812.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 218070.

It is not an unprimeable number, because it can be changed into a prime (218077) by changing a digit.

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, 1122 + ... + 1301.

It is an arithmetic number, because the mean of its divisors is an integer number (23634).

2²¹⁸⁰⁷⁰ is an apocalyptic number.

218070 is an abundant number, since it is smaller than the sum of its proper divisors (349146).

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

218070 is a wasteful number, since it uses less digits than its factorization.

218070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2436 (or 2433 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 218070 is about 466.9796569445. The cubic root of 218070 is about 60.1910576372.

Adding to 218070 its reverse (70812), we get a palindrome (288882).

The spelling of 218070 in words is "two hundred eighteen thousand, seventy".