20244222 has 16 divisors (see below), whose sum is σ = 44987280. Its totient is φ = 6748056.

The previous prime is 20244199. The next prime is 20244239. The reversal of 20244222 is 22244202.

20244222 is a `hidden beast` number, since 202 + 442 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20244195 and 20244204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187393 + ... + 187500.

It is an arithmetic number, because the mean of its divisors is an integer number (2811705).

Almost surely, 2^20244222 is an apocalyptic number.

20244222 is an abundant number, since it is smaller than the sum of its proper divisors (24743058).

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

20244222 is a wasteful number, since it uses less digits than its factorization.

20244222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374904 (or 374898 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 20244222 is about 4499.3579541975. The cubic root of 20244222 is about 272.5421622050.

Adding to 20244222 its reverse (22244202), we get a palindrome (42488424).

The spelling of 20244222 in words is "twenty million, two hundred forty-four thousand, two hundred twenty-two".