20423102020 has 24 divisors (see below), whose sum is σ = 42902088768. Its totient is φ = 8166655200.

The previous prime is 20423102017. The next prime is 20423102039. The reversal of 20423102020 is 2020132402.

It is a super-2 number, since 2×20423102020² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20423101985 and 20423102003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96186 + ... + 223825.

It is an arithmetic number, because the mean of its divisors is an integer number (1787587032).

Almost surely, 2^20423102020 is an apocalyptic number.

20423102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20423102020 is an abundant number, since it is smaller than the sum of its proper divisors (22478986748).

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

20423102020 is a wasteful number, since it uses less digits than its factorization.

20423102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323211 (or 323209 counting only the distinct ones).

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

Adding to 20423102020 its reverse (2020132402), we get a palindrome (22443234422).

The spelling of 20423102020 in words is "twenty billion, four hundred twenty-three million, one hundred two thousand, twenty".