4228220840 has 64 divisors (see below), whose sum is σ = 9725918400. Its totient is φ = 1653829632.

The previous prime is 4228220833. The next prime is 4228220863. The reversal of 4228220840 is 480228224.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 4228220797 and 4228220806.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 450839 + ... + 460121.

It is an arithmetic number, because the mean of its divisors is an integer number (151967475).

Almost surely, 2^4228220840 is an apocalyptic number.

4228220840 is a gapful number since it is divisible by the number (40) 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 4228220840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4862959200).

4228220840 is an abundant number, since it is smaller than the sum of its proper divisors (5497697560).

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

4228220840 is a wasteful number, since it uses less digits than its factorization.

4228220840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9546 (or 9542 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

The square root of 4228220840 is about 65024.7709722995. The cubic root of 4228220840 is about 1617.0342579056.

The spelling of 4228220840 in words is "four billion, two hundred twenty-eight million, two hundred twenty thousand, eight hundred forty".