6444120 has 64 divisors (see below), whose sum is σ = 19595520. Its totient is φ = 1695104.

The previous prime is 6444083. The next prime is 6444121. The reversal of 6444120 is 214446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6444121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9637 + ... + 10283.

It is an arithmetic number, because the mean of its divisors is an integer number (306180).

Almost surely, 2^6444120 is an apocalyptic number.

6444120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6444120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9797760).

6444120 is an abundant number, since it is smaller than the sum of its proper divisors (13151400).

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

6444120 is a wasteful number, since it uses less digits than its factorization.

6444120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744 (or 740 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 6444120 is about 2538.5271320197. The cubic root of 6444120 is about 186.0892160740.

Adding to 6444120 its reverse (214446), we get a palindrome (6658566).

The spelling of 6444120 in words is "six million, four hundred forty-four thousand, one hundred twenty".