2220705144 has 96 divisors (see below), whose sum is σ = 6923280000. Its totient is φ = 629902656.

The previous prime is 2220705133. The next prime is 2220705163. The reversal of 2220705144 is 4415070222.

It is a congruent number.

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, 54207 + ... + 85905.

It is an arithmetic number, because the mean of its divisors is an integer number (72117500).

Almost surely, 2^2220705144 is an apocalyptic number.

2220705144 is a gapful number since it is divisible by the number (24) 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 2220705144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3461640000).

2220705144 is an abundant number, since it is smaller than the sum of its proper divisors (4702574856).

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

2220705144 is a wasteful number, since it uses less digits than its factorization.

2220705144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31857 (or 31850 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 2220705144 is about 47124.3582874080. The cubic root of 2220705144 is about 1304.6588547656.

Adding to 2220705144 its reverse (4415070222), we get a palindrome (6635775366).

The spelling of 2220705144 in words is "two billion, two hundred twenty million, seven hundred five thousand, one hundred forty-four".