244220420 has 12 divisors (see below), whose sum is σ = 512862924. Its totient is φ = 97688160.

The previous prime is 244220401. The next prime is 244220423. The reversal of 244220420 is 24022442.

It can be written as a sum of positive squares in 2 ways, for example, as 43771456 + 200448964 = 6616^2 + 14158^2 .

It is a super-2 number, since 2×244220420² = 119287227089952800, which contains 22 as substring.

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: 12211021 = 244220420 / (2 + 4 + 4 + 2 + 2 + 0 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 244220392 and 244220401.

It is not an unprimeable number, because it can be changed into a prime (244220423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6105491 + ... + 6105530.

It is an arithmetic number, because the mean of its divisors is an integer number (42738577).

Almost surely, 2^244220420 is an apocalyptic number.

244220420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

244220420 is an abundant number, since it is smaller than the sum of its proper divisors (268642504).

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

244220420 is a wasteful number, since it uses less digits than its factorization.

244220420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12211030 (or 12211028 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 244220420 is about 15627.5532313923. The cubic root of 244220420 is about 625.0680843163.

Adding to 244220420 its reverse (24022442), we get a palindrome (268242862).

The spelling of 244220420 in words is "two hundred forty-four million, two hundred twenty thousand, four hundred twenty".