222019420 has 48 divisors (see below), whose sum is σ = 538372800. Its totient is φ = 75331584.

The previous prime is 222019417. The next prime is 222019459. The reversal of 222019420 is 24910222.

It is a junction number, because it is equal to n+sod(n) for n = 222019391 and 222019400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5406 + ... + 21754.

It is an arithmetic number, because the mean of its divisors is an integer number (11216100).

Almost surely, 2^222019420 is an apocalyptic number.

222019420 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 222019420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269186400).

222019420 is an abundant number, since it is smaller than the sum of its proper divisors (316353380).

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

222019420 is a wasteful number, since it uses less digits than its factorization.

222019420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16462 (or 16460 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 222019420 is about 14900.3161040295. The cubic root of 222019420 is about 605.5225501499.

Adding to 222019420 its reverse (24910222), we get a palindrome (246929642).

The spelling of 222019420 in words is "two hundred twenty-two million, nineteen thousand, four hundred twenty".