20220344 has 32 divisors (see below), whose sum is σ = 40441680. Its totient is φ = 9444864.

The previous prime is 20220331. The next prime is 20220349. The reversal of 20220344 is 44302202.

20220344 = T₄₂₇ + T₄₂₈ + ... + T₅₈₃.

It is a super-2 number, since 2×20220344² = 817724622956672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20879 + ... + 21825.

Almost surely, 2^20220344 is an apocalyptic number.

It is an amenable number.

20220344 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

20220344 is a wasteful number, since it uses less digits than its factorization.

20220344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127 (or 1123 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 20220344 is about 4496.7036815872. The cubic root of 20220344 is about 272.4349658231.

Adding to 20220344 its reverse (44302202), we get a palindrome (64522546).

The spelling of 20220344 in words is "twenty million, two hundred twenty thousand, three hundred forty-four".