22444444420 has 12 divisors (see below), whose sum is σ = 47133333324. Its totient is φ = 8977777760.

The previous prime is 22444444417. The next prime is 22444444483. The reversal of 22444444420 is 2444444422.

It can be written as a sum of positive squares in 2 ways, for example, as 7127411776 + 15317032644 = 84424^2 + 123762^2 .

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, 561111091 + ... + 561111130.

It is an arithmetic number, because the mean of its divisors is an integer number (3927777777).

Almost surely, 2^22444444420 is an apocalyptic number.

22444444420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22444444420 is an abundant number, since it is smaller than the sum of its proper divisors (24688888904).

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

22444444420 is a wasteful number, since it uses less digits than its factorization.

22444444420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122222230 (or 1122222228 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 34.

Adding to 22444444420 its reverse (2444444422), we get a palindrome (24888888842).

The spelling of 22444444420 in words is "twenty-two billion, four hundred forty-four million, four hundred forty-four thousand, four hundred twenty".