3200000020 has 48 divisors (see below), whose sum is σ = 7685774208. Its totient is φ = 1096318080.

The previous prime is 3199999997. The next prime is 3200000087. The reversal of 3200000020 is 200000023.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a junction number, because it is equal to n+sod(n) for n = 3199999949 and 3200000012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195555 + ... + 211285.

It is an arithmetic number, because the mean of its divisors is an integer number (160120296).

Almost surely, 2^3200000020 is an apocalyptic number.

It is an amenable number.

3200000020 is an abundant number, since it is smaller than the sum of its proper divisors (4485774188).

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

3200000020 is a wasteful number, since it uses less digits than its factorization.

3200000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17200 (or 17198 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 7.

The square root of 3200000020 is about 56568.5426717005. The cubic root of 3200000020 is about 1473.6126025262.

Adding to 3200000020 its reverse (200000023), we get a palindrome (3400000043).

The spelling of 3200000020 in words is "three billion, two hundred million, twenty", and thus it is an aban number.