244231220 has 12 divisors (see below), whose sum is σ = 512885604. Its totient is φ = 97692480.

The previous prime is 244231217. The next prime is 244231259. The reversal of 244231220 is 22132442.

244231220 is digitally balanced in base 2, 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 2 ways, for example, as 103144336 + 141086884 = 10156^2 + 11878^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 12211561 = 244231220 / (2 + 4 + 4 + 2 + 3 + 1 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 244231192 and 244231201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6105761 + ... + 6105800.

It is an arithmetic number, because the mean of its divisors is an integer number (42740467).

Almost surely, 2^244231220 is an apocalyptic number.

244231220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

244231220 is an abundant number, since it is smaller than the sum of its proper divisors (268654384).

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

244231220 is a wasteful number, since it uses less digits than its factorization.

244231220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12211570 (or 12211568 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 244231220 is about 15627.8987711080. The cubic root of 244231220 is about 625.0772981729.

Adding to 244231220 its reverse (22132442), we get a palindrome (266363662).

The spelling of 244231220 in words is "two hundred forty-four million, two hundred thirty-one thousand, two hundred twenty".