22020004 has 6 divisors (see below), whose sum is σ = 38535014. Its totient is φ = 11010000.

The previous prime is 22019989. The next prime is 22020023. The reversal of 22020004 is 40002022.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17388900 + 4631104 = 4170^2 + 2152^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2752497 + ... + 2752504.

Almost surely, 2^22020004 is an apocalyptic number.

It is an amenable number.

22020004 is a deficient number, since it is larger than the sum of its proper divisors (16515010).

22020004 is a wasteful number, since it uses less digits than its factorization.

22020004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5505005 (or 5505003 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 22020004 is about 4692.5477088678. The cubic root of 22020004 is about 280.2888346027.

Adding to 22020004 its reverse (40002022), we get a palindrome (62022026).

The spelling of 22020004 in words is "twenty-two million, twenty thousand, four".