3200020 has 12 divisors (see below), whose sum is σ = 6720084. Its totient is φ = 1280000.

The previous prime is 3200003. The next prime is 3200027. The reversal of 3200020 is 200023.

It can be written as a sum of positive squares in 2 ways, for example, as 2553604 + 646416 = 1598^2 + 804^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3199976 and 3200012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3200027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79981 + ... + 80020.

It is an arithmetic number, because the mean of its divisors is an integer number (560007).

Almost surely, 2^3200020 is an apocalyptic number.

It is an amenable number.

3200020 is an abundant number, since it is smaller than the sum of its proper divisors (3520064).

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

3200020 is a wasteful number, since it uses less digits than its factorization.

3200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160010 (or 160008 counting only the distinct ones).

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

The square root of 3200020 is about 1788.8599721610. The cubic root of 3200020 is about 147.3615669476.

Adding to 3200020 its reverse (200023), we get a palindrome (3400043).

It can be divided in two parts, 32000 and 20, that multiplied together give a square (640000 = 800²).

The spelling of 3200020 in words is "three million, two hundred thousand, twenty".