2020000000 has 144 divisors (see below), whose sum is σ = 5090026032. Its totient is φ = 800000000.

The previous prime is 2019999911. The next prime is 2020000039. The reversal of 2020000000 is 202.

It can be written as a sum of positive squares in 8 ways, for example, as 1937408256 + 82591744 = 44016^2 + 9088^2 .

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 congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19999950 + ... + 20000050.

It is an arithmetic number, because the mean of its divisors is an integer number (35347403).

Almost surely, 2^2020000000 is an apocalyptic number.

2020000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2020000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2545013016).

2020000000 is an abundant number, since it is smaller than the sum of its proper divisors (3070026032).

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

2020000000 is an frugal number, since it uses more digits than its factorization.

2020000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 108 counting only the distinct ones).

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

The square root of 2020000000 is about 44944.4101084885. The cubic root of 2020000000 is about 1264.1068648633.

Adding to 2020000000 its reverse (202), we get a palindrome (2020000202).

2020000000 divided by its reverse (202) gives a 7-th power (10000000 = 10⁷).

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

The spelling of 2020000000 in words is "two billion, twenty million", and thus it is an aban number and an uban number.