220020420 has 48 divisors (see below), whose sum is σ = 622173888. Its totient is φ = 58089600.

The previous prime is 220020401. The next prime is 220020421. The reversal of 220020420 is 24020022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 220020396 and 220020405.

It is not an unprimeable number, because it can be changed into a prime (220020421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12094 + ... + 24213.

It is an arithmetic number, because the mean of its divisors is an integer number (12961956).

Almost surely, 2^220020420 is an apocalyptic number.

220020420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220020420 is an abundant number, since it is smaller than the sum of its proper divisors (402153468).

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

220020420 is a wasteful number, since it uses less digits than its factorization.

220020420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36420 (or 36418 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 220020420 is about 14833.0853162786. The cubic root of 220020420 is about 603.6997506285.

Adding to 220020420 its reverse (24020022), we get a palindrome (244040442).

The spelling of 220020420 in words is "two hundred twenty million, twenty thousand, four hundred twenty".