2000000020 has 24 divisors (see below), whose sum is σ = 4447059624. Its totient is φ = 752941056.

The previous prime is 2000000011. The next prime is 2000000033. The reversal of 2000000020 is 200000002.

It can be written as a sum of positive squares in 4 ways, for example, as 670084996 + 1329915024 = 25886^2 + 36468^2 .

It is a Harshad number since it is a multiple of its sum of digits (4).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a junction number, because it is equal to n+sod(n) for n = 1999999946 and 2000000009.

It is a congruent number.

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, 2940837 + ... + 2941516.

It is an arithmetic number, because the mean of its divisors is an integer number (185294151).

Almost surely, 2^2000000020 is an apocalyptic number.

2000000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2000000020 is an abundant number, since it is smaller than the sum of its proper divisors (2447059604).

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

2000000020 is a wasteful number, since it uses less digits than its factorization.

2000000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5882379 (or 5882377 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 4.

The square root of 2000000020 is about 44721.3597736026. The cubic root of 2000000020 is about 1259.9210540946.

Adding to 2000000020 its reverse (200000002), we get a palindrome (2200000022).

It can be divided in two parts, 20000000 and 20, that multiplied together give a square (400000000 = 20000²).

The spelling of 2000000020 in words is "two billion, twenty", and thus it is an aban number and an uban number.