244421320 has 192 divisors, whose sum is σ = 687787200. Its totient is φ = 77276160.

The previous prime is 244421311. The next prime is 244421321. The reversal of 244421320 is 23124442.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 244421291 and 244421300.

It is not an unprimeable number, because it can be changed into a prime (244421321) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1412754 + ... + 1412926.

It is an arithmetic number, because the mean of its divisors is an integer number (3582225).

Almost surely, 2^244421320 is an apocalyptic number.

244421320 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 244421320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343893600).

244421320 is an abundant number, since it is smaller than the sum of its proper divisors (443365880).

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

244421320 is a wasteful number, since it uses less digits than its factorization.

244421320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 244421320 is about 15633.9796597028. The cubic root of 244421320 is about 625.2394346620.

Adding to 244421320 its reverse (23124442), we get a palindrome (267545762).

The spelling of 244421320 in words is "two hundred forty-four million, four hundred twenty-one thousand, three hundred twenty".