3218680 has 32 divisors (see below), whose sum is σ = 7356240. Its totient is φ = 1267200.

The previous prime is 3218669. The next prime is 3218693. The reversal of 3218680 is 868123.

3218680 = T₃₈₁ + T₃₈₂ + ... + T₄₂₀.

3218680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2080 + ... + 3280.

Almost surely, 2^3218680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3218680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3678120).

3218680 is an abundant number, since it is smaller than the sum of its proper divisors (4137560).

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

3218680 is a wasteful number, since it uses less digits than its factorization.

3218680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279 (or 1275 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 3218680 is about 1794.0680031704. The cubic root of 3218680 is about 147.6474442506.

The spelling of 3218680 in words is "three million, two hundred eighteen thousand, six hundred eighty".