6381224 has 16 divisors (see below), whose sum is σ = 12028500. Its totient is φ = 3173632.

The previous prime is 6381217. The next prime is 6381227. The reversal of 6381224 is 4221836.

It can be written as a sum of positive squares in 2 ways, for example, as 6160324 + 220900 = 2482^2 + 470^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6381193 and 6381202.

It is not an unprimeable number, because it can be changed into a prime (6381227) 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 3 ways as a sum of consecutive naturals, for example, 449 + ... + 3600.

Almost surely, 2^6381224 is an apocalyptic number.

It is an amenable number.

6381224 is a deficient number, since it is larger than the sum of its proper divisors (5647276).

6381224 is a wasteful number, since it uses less digits than its factorization.

6381224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4252 (or 4248 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 6381224 is about 2526.1084695634. The cubic root of 6381224 is about 185.4818120174.

It can be divided in two parts, 63812 and 24, that added together give a palindrome (63836).

The spelling of 6381224 in words is "six million, three hundred eighty-one thousand, two hundred twenty-four".