3243420020 has 48 divisors (see below), whose sum is σ = 6948211536. Its totient is φ = 1271424000.

The previous prime is 3243420013. The next prime is 3243420031. The reversal of 3243420020 is 200243423.

It can be written as a sum of positive squares in 8 ways, for example, as 72829156 + 3170590864 = 8534^2 + 56308^2 .

It is a super-2 number, since 2×3243420020² = 21039546852273600800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3243419974 and 3243420001.

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, 338090 + ... + 347550.

It is an arithmetic number, because the mean of its divisors is an integer number (144754407).

Almost surely, 2^3243420020 is an apocalyptic number.

It is an amenable number.

3243420020 is an abundant number, since it is smaller than the sum of its proper divisors (3704791516).

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

3243420020 is a wasteful number, since it uses less digits than its factorization.

3243420020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9812 (or 9810 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 3243420020 is about 56951.0317729187. The cubic root of 3243420020 is about 1480.2477093296.

Adding to 3243420020 its reverse (200243423), we get a palindrome (3443663443).

The spelling of 3243420020 in words is "three billion, two hundred forty-three million, four hundred twenty thousand, twenty".