20022020 has 24 divisors (see below), whose sum is σ = 42130368. Its totient is φ = 7992800.

The previous prime is 20022017. The next prime is 20022043. The reversal of 20022020 is 2022002.

It is a junction number, because it is equal to n+sod(n) for n = 20021989 and 20022007.

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, 18905 + ... + 19935.

It is an arithmetic number, because the mean of its divisors is an integer number (1755432).

Almost surely, 2^20022020 is an apocalyptic number.

20022020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20022020 is an abundant number, since it is smaller than the sum of its proper divisors (22108348).

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

20022020 is a wasteful number, since it uses less digits than its factorization.

20022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011 (or 2009 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 20022020 is about 4474.5971885746. The cubic root of 20022020 is about 271.5413442481.

Adding to 20022020 its reverse (2022002), we get a palindrome (22044022).

The spelling of 20022020 in words is "twenty million, twenty-two thousand, twenty".