6404244 has 96 divisors (see below), whose sum is σ = 19353600. Its totient is φ = 1599360.

The previous prime is 6404243. The next prime is 6404249. The reversal of 6404244 is 4424046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6404243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26677 + ... + 26915.

It is an arithmetic number, because the mean of its divisors is an integer number (201600).

Almost surely, 2^6404244 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 6404244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9676800).

6404244 is an abundant number, since it is smaller than the sum of its proper divisors (12949356).

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

6404244 is a wasteful number, since it uses less digits than its factorization.

6404244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 6404244 is about 2530.6607832738. The cubic root of 6404244 is about 185.7045836577.

It can be divided in two parts, 640 and 4244, that added together give a palindrome (4884).

The spelling of 6404244 in words is "six million, four hundred four thousand, two hundred forty-four".