220843900 has 18 divisors (see below), whose sum is σ = 479231480. Its totient is φ = 88337520.

The previous prime is 220843891. The next prime is 220843901. The reversal of 220843900 is 9348022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220843901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1104120 + ... + 1104319.

Almost surely, 2^220843900 is an apocalyptic number.

220843900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220843900 is an abundant number, since it is smaller than the sum of its proper divisors (258387580).

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

220843900 is a wasteful number, since it uses less digits than its factorization.

220843900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208453 (or 2208446 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 220843900 is about 14860.8176087320. The cubic root of 220843900 is about 604.4519773857.

The spelling of 220843900 in words is "two hundred twenty million, eight hundred forty-three thousand, nine hundred".