20010218 has 16 divisors (see below), whose sum is σ = 30468096. Its totient is φ = 9855600.

The previous prime is 20010217. The next prime is 20010223. The reversal of 20010218 is 81201002.

It is not an unprimeable number, because it can be changed into a prime (20010217) 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, 52055 + ... + 52437.

It is an arithmetic number, because the mean of its divisors is an integer number (1904256).

Almost surely, 2^20010218 is an apocalyptic number.

20010218 is a deficient number, since it is larger than the sum of its proper divisors (10457878).

20010218 is a wasteful number, since it uses less digits than its factorization.

20010218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 20010218 is about 4473.2782162526. The cubic root of 20010218 is about 271.4879803214.

The spelling of 20010218 in words is "twenty million, ten thousand, two hundred eighteen".