20604002020 has 48 divisors (see below), whose sum is σ = 49939239168. Its totient is φ = 6994281600.

The previous prime is 20604002011. The next prime is 20604002033. The reversal of 20604002020 is 2020040602.

It is a junction number, because it is equal to n+sod(n) for n = 20604001985 and 20604002003.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 714432 + ... + 742711.

It is an arithmetic number, because the mean of its divisors is an integer number (1040400816).

Almost surely, 2^20604002020 is an apocalyptic number.

20604002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20604002020 is an abundant number, since it is smaller than the sum of its proper divisors (29335237148).

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

20604002020 is a wasteful number, since it uses less digits than its factorization.

20604002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457260 (or 1457258 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20604002020 its reverse (2020040602), we get a palindrome (22624042622).

The spelling of 20604002020 in words is "twenty billion, six hundred four million, two thousand, twenty".