22220404 has 12 divisors (see below), whose sum is σ = 39271428. Its totient is φ = 11000000.

The previous prime is 22220399. The next prime is 22220417. The reversal of 22220404 is 40402222.

It can be written as a sum of positive squares in 2 ways, for example, as 10304100 + 11916304 = 3210^2 + 3452^2 .

It is a congruent number.

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, 27097 + ... + 27904.

It is an arithmetic number, because the mean of its divisors is an integer number (3272619).

Almost surely, 2^22220404 is an apocalyptic number.

It is an amenable number.

22220404 is a deficient number, since it is larger than the sum of its proper divisors (17051024).

22220404 is a wasteful number, since it uses less digits than its factorization.

22220404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55106 (or 55104 counting only the distinct ones).

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

The square root of 22220404 is about 4713.8523523759. The cubic root of 22220404 is about 281.1365538180.

Adding to 22220404 its reverse (40402222), we get a palindrome (62622626).

The spelling of 22220404 in words is "twenty-two million, two hundred twenty thousand, four hundred four".