4544012220 has 144 divisors (see below), whose sum is σ = 14125787424. Its totient is φ = 1090496000.

The previous prime is 4544012191. The next prime is 4544012237. The reversal of 4544012220 is 222104454.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 730162 + ... + 736358.

It is an arithmetic number, because the mean of its divisors is an integer number (98095746).

Almost surely, 2^4544012220 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 4544012220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7062893712).

4544012220 is an abundant number, since it is smaller than the sum of its proper divisors (9581775204).

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

4544012220 is a wasteful number, since it uses less digits than its factorization.

4544012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6332 (or 6319 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 4544012220 is about 67409.2888257991. The cubic root of 4544012220 is about 1656.3285845329.

Adding to 4544012220 its reverse (222104454), we get a palindrome (4766116674).

The spelling of 4544012220 in words is "four billion, five hundred forty-four million, twelve thousand, two hundred twenty".