22204020 has 24 divisors (see below), whose sum is σ = 62171424. Its totient is φ = 5921056.

The previous prime is 22204009. The next prime is 22204051. The reversal of 22204020 is 2040222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 22203987 and 22204005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184974 + ... + 185093.

It is an arithmetic number, because the mean of its divisors is an integer number (2590476).

Almost surely, 2^22204020 is an apocalyptic number.

22204020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22204020 is an abundant number, since it is smaller than the sum of its proper divisors (39967404).

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

22204020 is a wasteful number, since it uses less digits than its factorization.

22204020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370079 (or 370077 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 22204020 is about 4712.1141751872. The cubic root of 22204020 is about 281.0674390552.

Adding to 22204020 its reverse (2040222), we get a palindrome (24244242).

It can be divided in two parts, 2 and 2204020, that added together give a palindrome (2204022).

The spelling of 22204020 in words is "twenty-two million, two hundred four thousand, twenty".