220203216 has 30 divisors (see below), whose sum is σ = 616263570. Its totient is φ = 73401024.

The previous prime is 220203167. The next prime is 220203241. The reversal of 220203216 is 612302022.

It can be written as a sum of positive squares in only one way, i.e., 135489600 + 84713616 = 11640^2 + 9204^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 764451 + ... + 764738.

It is an arithmetic number, because the mean of its divisors is an integer number (20542119).

Almost surely, 2^220203216 is an apocalyptic number.

It is an amenable number.

220203216 is an abundant number, since it is smaller than the sum of its proper divisors (396060354).

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

220203216 is a wasteful number, since it uses less digits than its factorization.

220203216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529203 (or 1529194 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 220203216 is about 14839.2458029376. The cubic root of 220203216 is about 603.8668917095.

Adding to 220203216 its reverse (612302022), we get a palindrome (832505238).

The spelling of 220203216 in words is "two hundred twenty million, two hundred three thousand, two hundred sixteen".