244243220 has 72 divisors (see below), whose sum is σ = 572581464. Its totient is φ = 86994432.

The previous prime is 244243217. The next prime is 244243231. The reversal of 244243220 is 22342442.

244243220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 154902916 + 89340304 = 12446^2 + 9452^2 .

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, 218102 + ... + 219218.

Almost surely, 2^244243220 is an apocalyptic number.

244243220 is a gapful number since it is divisible by the number (20) 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 244243220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286290732).

244243220 is an abundant number, since it is smaller than the sum of its proper divisors (328338244).

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

244243220 is a wasteful number, since it uses less digits than its factorization.

244243220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197 (or 1166 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 244243220 is about 15628.2826951652. The cubic root of 244243220 is about 625.0875354728.

Adding to 244243220 its reverse (22342442), we get a palindrome (266585662).

The spelling of 244243220 in words is "two hundred forty-four million, two hundred forty-three thousand, two hundred twenty".