220020680 has 128 divisors (see below), whose sum is σ = 573091200. Its totient is φ = 75264000.

The previous prime is 220020673. The next prime is 220020683. The reversal of 220020680 is 86020022.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (220020683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 548480 + ... + 548880.

It is an arithmetic number, because the mean of its divisors is an integer number (4477275).

Almost surely, 2^220020680 is an apocalyptic number.

220020680 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 220020680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286545600).

220020680 is an abundant number, since it is smaller than the sum of its proper divisors (353070520).

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

220020680 is a wasteful number, since it uses less digits than its factorization.

220020680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 220020680 is about 14833.0940804675. The cubic root of 220020680 is about 603.6999884274.

The spelling of 220020680 in words is "two hundred twenty million, twenty thousand, six hundred eighty".