6381020 has 24 divisors (see below), whose sum is σ = 13763904. Its totient is φ = 2483136.

The previous prime is 6381007. The next prime is 6381031. The reversal of 6381020 is 201836.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 6380983 and 6381001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3572 + ... + 5051.

It is an arithmetic number, because the mean of its divisors is an integer number (573496).

Almost surely, 2^6381020 is an apocalyptic number.

It is an amenable number.

6381020 is an abundant number, since it is smaller than the sum of its proper divisors (7382884).

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

6381020 is a wasteful number, since it uses less digits than its factorization.

6381020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8669 (or 8667 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 6381020 is about 2526.0680909271. The cubic root of 6381020 is about 185.4798354534.

Adding to 6381020 its reverse (201836), we get a palindrome (6582856).

The spelling of 6381020 in words is "six million, three hundred eighty-one thousand, twenty".