220843980 has 216 divisors, whose sum is σ = 792241632. Its totient is φ = 49787136.

The previous prime is 220843979. The next prime is 220844003. The reversal of 220843980 is 89348022.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 7.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3025224 + ... + 3025296.

Almost surely, 2^220843980 is an apocalyptic number.

220843980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220843980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (396120816).

220843980 is an abundant number, since it is smaller than the sum of its proper divisors (571397652).

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

220843980 is an equidigital number, since it uses as much as digits as its factorization.

220843980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 220843980 is about 14860.8203003737. The cubic root of 220843980 is about 604.4520503727.

The spelling of 220843980 in words is "two hundred twenty million, eight hundred forty-three thousand, nine hundred eighty".