20220404020 has 24 divisors (see below), whose sum is σ = 42883276968. Its totient is φ = 8008080000.

The previous prime is 20220404011. The next prime is 20220404081. The reversal of 20220404020 is 2040402202.

It can be written as a sum of positive squares in 4 ways, for example, as 3497776164 + 16722627856 = 59142^2 + 129316^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20220403985 and 20220404003.

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 in 7 ways as a sum of consecutive naturals, for example, 5003031 + ... + 5007070.

It is an arithmetic number, because the mean of its divisors is an integer number (1786803207).

Almost surely, 2^20220404020 is an apocalyptic number.

20220404020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20220404020 is an abundant number, since it is smaller than the sum of its proper divisors (22662872948).

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

20220404020 is a wasteful number, since it uses less digits than its factorization.

20220404020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10010211 (or 10010209 counting only the distinct ones).

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

Adding to 20220404020 its reverse (2040402202), we get a palindrome (22260806222).

The spelling of 20220404020 in words is "twenty billion, two hundred twenty million, four hundred four thousand, twenty".