6221920 has 48 divisors (see below), whose sum is σ = 15110928. Its totient is φ = 2419200.

The previous prime is 6221909. The next prime is 6221927. The reversal of 6221920 is 291226.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6221891 and 6221900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6221927) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5395 + ... + 6445.

It is an arithmetic number, because the mean of its divisors is an integer number (314811).

Almost surely, 2^6221920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6221920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7555464).

6221920 is an abundant number, since it is smaller than the sum of its proper divisors (8889008).

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

6221920 is a wasteful number, since it uses less digits than its factorization.

6221920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103 (or 1095 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 6221920 is about 2494.3776778988. The cubic root of 6221920 is about 183.9253004908.

The spelling of 6221920 in words is "six million, two hundred twenty-one thousand, nine hundred twenty".