20202002020 has 24 divisors (see below), whose sum is σ = 44919746424. Its totient is φ = 7605459456.

The previous prime is 20202001987. The next prime is 20202002033. The reversal of 20202002020 is 2020020202.

It can be written as a sum of positive squares in 4 ways, for example, as 1551729664 + 18650272356 = 39392^2 + 136566^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20202001988 and 20202002006.

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, 29708487 + ... + 29709166.

It is an arithmetic number, because the mean of its divisors is an integer number (1871656101).

Almost surely, 2^20202002020 is an apocalyptic number.

20202002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202002020 is an abundant number, since it is smaller than the sum of its proper divisors (24717744404).

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

20202002020 is a wasteful number, since it uses less digits than its factorization.

20202002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59417679 (or 59417677 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

Adding to 20202002020 its reverse (2020020202), we get a palindrome (22222022222).

The spelling of 20202002020 in words is "twenty billion, two hundred two million, two thousand, twenty".