22020424 has 16 divisors (see below), whose sum is σ = 41698620. Its totient is φ = 10900800.

The previous prime is 22020419. The next prime is 22020431. The reversal of 22020424 is 42402022.

It can be written as a sum of positive squares in 2 ways, for example, as 20088324 + 1932100 = 4482^2 + 1390^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22020398 and 22020407.

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, 12819 + ... + 14434.

Almost surely, 2^22020424 is an apocalyptic number.

It is an amenable number.

22020424 is a deficient number, since it is larger than the sum of its proper divisors (19678196).

22020424 is a wasteful number, since it uses less digits than its factorization.

22020424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27360 (or 27356 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 22020424 is about 4692.5924604636. The cubic root of 22020424 is about 280.2906166272.

Adding to 22020424 its reverse (42402022), we get a palindrome (64422446).

The spelling of 22020424 in words is "twenty-two million, twenty thousand, four hundred twenty-four".