3218140 has 12 divisors (see below), whose sum is σ = 6758136. Its totient is φ = 1287248.

The previous prime is 3218123. The next prime is 3218143. The reversal of 3218140 is 418123.

3218140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3218143) 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, 80434 + ... + 80473.

It is an arithmetic number, because the mean of its divisors is an integer number (563178).

Almost surely, 2^3218140 is an apocalyptic number.

It is an amenable number.

3218140 is an abundant number, since it is smaller than the sum of its proper divisors (3539996).

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

3218140 is a wasteful number, since it uses less digits than its factorization.

3218140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160916 (or 160914 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 3218140 is about 1793.9175008902. The cubic root of 3218140 is about 147.6391868201.

The spelling of 3218140 in words is "three million, two hundred eighteen thousand, one hundred forty".