3000000020 has 12 divisors (see below), whose sum is σ = 6300000084. Its totient is φ = 1200000000.

The previous prime is 3000000019. The next prime is 3000000037. The reversal of 3000000020 is 200000003.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1359101956 + 1640898064 = 36866^2 + 40508^2 .

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a junction number, because it is equal to n+sod(n) for n = 2999999950 and 3000000013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74999981 + ... + 75000020.

It is an arithmetic number, because the mean of its divisors is an integer number (525000007).

Almost surely, 2^3000000020 is an apocalyptic number.

It is an amenable number.

3000000020 is an abundant number, since it is smaller than the sum of its proper divisors (3300000064).

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

3000000020 is a wasteful number, since it uses less digits than its factorization.

3000000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150000010 (or 150000008 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 5.

The square root of 3000000020 is about 54772.2559330908. The cubic root of 3000000020 is about 1442.2495735124.

Adding to 3000000020 its reverse (200000003), we get a palindrome (3200000023).

The spelling of 3000000020 in words is "three billion, twenty", and thus it is an aban number and an uban number.