3200820 has 48 divisors (see below), whose sum is σ = 10243968. Its totient is φ = 731520.

The previous prime is 3200807. The next prime is 3200837. The reversal of 3200820 is 280023.

3200820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 3200820.

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, 3391 + ... + 4230.

It is an arithmetic number, because the mean of its divisors is an integer number (213416).

Almost surely, 2^3200820 is an apocalyptic number.

3200820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3200820 is an abundant number, since it is smaller than the sum of its proper divisors (7043148).

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

3200820 is a wasteful number, since it uses less digits than its factorization.

3200820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7640 (or 7638 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 3200820 is about 1789.0835642865. The cubic root of 3200820 is about 147.3738459782.

Adding to 3200820 its reverse (280023), we get a palindrome (3480843).

The spelling of 3200820 in words is "three million, two hundred thousand, eight hundred twenty".