4223006640 has 120 divisors (see below), whose sum is σ = 14214938400. Its totient is φ = 1123540992.

The previous prime is 4223006587. The next prime is 4223006681. The reversal of 4223006640 is 466003224.

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 316749 + ... + 329811.

It is an arithmetic number, because the mean of its divisors is an integer number (118457820).

Almost surely, 2^4223006640 is an apocalyptic number.

4223006640 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 4223006640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7107469200).

4223006640 is an abundant number, since it is smaller than the sum of its proper divisors (9991931760).

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

4223006640 is a wasteful number, since it uses less digits than its factorization.

4223006640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13531 (or 13522 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 4223006640 is about 64984.6646525163. The cubic root of 4223006640 is about 1616.3692809472.

Adding to 4223006640 its reverse (466003224), we get a palindrome (4689009864).

The spelling of 4223006640 in words is "four billion, two hundred twenty-three million, six thousand, six hundred forty".