6820044 has 96 divisors (see below), whose sum is σ = 20332032. Its totient is φ = 1742400.

The previous prime is 6820039. The next prime is 6820057. The reversal of 6820044 is 4400286.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 6819996 and 6820023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111774 + ... + 111834.

It is an arithmetic number, because the mean of its divisors is an integer number (211792).

Almost surely, 2^6820044 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 6820044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10166016).

6820044 is an abundant number, since it is smaller than the sum of its proper divisors (13511988).

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

6820044 is a wasteful number, since it uses less digits than its factorization.

6820044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 6820044 is about 2611.5213956619. The cubic root of 6820044 is about 189.6396123326.

The spelling of 6820044 in words is "six million, eight hundred twenty thousand, forty-four".