218283020 has 24 divisors (see below), whose sum is σ = 482521200. Its totient is φ = 82717632.

The previous prime is 218283019. The next prime is 218283031. The reversal of 218283020 is 20382812.

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 7 ways as a sum of consecutive naturals, for example, 286835 + ... + 287594.

It is an arithmetic number, because the mean of its divisors is an integer number (20105050).

Almost surely, 2^218283020 is an apocalyptic number.

218283020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

218283020 is an abundant number, since it is smaller than the sum of its proper divisors (264238180).

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

218283020 is a wasteful number, since it uses less digits than its factorization.

218283020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574457 (or 574455 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 218283020 is about 14774.4042181064. The cubic root of 218283020 is about 602.1065031599.

The spelling of 218283020 in words is "two hundred eighteen million, two hundred eighty-three thousand, twenty".