220423680 has 200 divisors, whose sum is σ = 790230672. Its totient is φ = 58724352.

The previous prime is 220423669. The next prime is 220423703. The reversal of 220423680 is 86324022.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 206829 + ... + 207891.

Almost surely, 2^220423680 is an apocalyptic number.

220423680 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 220423680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (395115336).

220423680 is an abundant number, since it is smaller than the sum of its proper divisors (569806992).

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

220423680 is an equidigital number, since it uses as much as digits as its factorization.

220423680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098 (or 1073 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 220423680 is about 14846.6723544369. The cubic root of 220423680 is about 604.0683518395.

The spelling of 220423680 in words is "two hundred twenty million, four hundred twenty-three thousand, six hundred eighty".