6218140 has 24 divisors (see below), whose sum is σ = 13240080. Its totient is φ = 2452608.

The previous prime is 6218117. The next prime is 6218143. The reversal of 6218140 is 418126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6218143) by changing a digit.

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, 670 + ... + 3589.

It is an arithmetic number, because the mean of its divisors is an integer number (551670).

Almost surely, 2^6218140 is an apocalyptic number.

It is an amenable number.

6218140 is an abundant number, since it is smaller than the sum of its proper divisors (7021940).

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

6218140 is a wasteful number, since it uses less digits than its factorization.

6218140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4341 (or 4339 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 6218140 is about 2493.6198587596. The cubic root of 6218140 is about 183.8880462629. Note that the first 3 decimals are identical.

The spelling of 6218140 in words is "six million, two hundred eighteen thousand, one hundred forty".