4220646420 has 96 divisors (see below), whose sum is σ = 12040358400. Its totient is φ = 1104383104.

The previous prime is 4220646413. The next prime is 4220646427. The reversal of 4220646420 is 246460224.

It is an interprime number because it is at equal distance from previous prime (4220646413) and next prime (4220646427).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4220646427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3351751 + ... + 3353009.

It is an arithmetic number, because the mean of its divisors is an integer number (125420400).

Almost surely, 2^4220646420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4220646420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6020179200).

4220646420 is an abundant number, since it is smaller than the sum of its proper divisors (7819711980).

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

4220646420 is a wasteful number, since it uses less digits than its factorization.

4220646420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277 (or 2275 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The square root of 4220646420 is about 64966.5022915656. The cubic root of 4220646420 is about 1616.0680975821.

The spelling of 4220646420 in words is "four billion, two hundred twenty million, six hundred forty-six thousand, four hundred twenty".