6821230 has 32 divisors (see below), whose sum is σ = 13353984. Its totient is φ = 2493696.

The previous prime is 6821207. The next prime is 6821231. The reversal of 6821230 is 321286.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6821231) 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 15 ways as a sum of consecutive naturals, for example, 17619 + ... + 18001.

It is an arithmetic number, because the mean of its divisors is an integer number (417312).

Almost surely, 2^6821230 is an apocalyptic number.

6821230 is a deficient number, since it is larger than the sum of its proper divisors (6532754).

6821230 is a wasteful number, since it uses less digits than its factorization.

6821230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 6821230 is about 2611.7484564942. The cubic root of 6821230 is about 189.6506044193.

The spelling of 6821230 in words is "six million, eight hundred twenty-one thousand, two hundred thirty".