220022420 has 72 divisors (see below), whose sum is σ = 486979584. Its totient is φ = 83486592.

The previous prime is 220022419. The next prime is 220022447. The reversal of 220022420 is 24220022.

It is a junction number, because it is equal to n+sod(n) for n = 220022395 and 220022404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1732397 + ... + 1732523.

Almost surely, 2^220022420 is an apocalyptic number.

220022420 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 220022420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243489792).

220022420 is an abundant number, since it is smaller than the sum of its proper divisors (266957164).

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

220022420 is a wasteful number, since it uses less digits than its factorization.

220022420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 266 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 220022420 is about 14833.1527329830. The cubic root of 220022420 is about 603.7015798463.

Adding to 220022420 its reverse (24220022), we get a palindrome (244242442).

The spelling of 220022420 in words is "two hundred twenty million, twenty-two thousand, four hundred twenty".