6381844 has 24 divisors (see below), whose sum is σ = 12821760. Its totient is φ = 2722656.

The previous prime is 6381829. The next prime is 6381847. The reversal of 6381844 is 4481836.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6381847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8517 + ... + 9235.

It is an arithmetic number, because the mean of its divisors is an integer number (534240).

Almost surely, 2^6381844 is an apocalyptic number.

It is an amenable number.

6381844 is an abundant number, since it is smaller than the sum of its proper divisors (6439916).

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

6381844 is a wasteful number, since it uses less digits than its factorization.

6381844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047 (or 1045 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 6381844 is about 2526.2311849868. The cubic root of 6381844 is about 185.4878189631.

It can be divided in two parts, 6381 and 844, that added together give a square (7225 = 85²).

The spelling of 6381844 in words is "six million, three hundred eighty-one thousand, eight hundred forty-four".