3218481 has 16 divisors (see below), whose sum is σ = 5449600. Its totient is φ = 1839024.

The previous prime is 3218477. The next prime is 3218483. The reversal of 3218481 is 1848123.

It is not a de Polignac number, because 3218481 - 2² = 3218477 is a prime.

It is a super-2 number, since 2×3218481² = 20717239894722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

3218481 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3218483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8326 + ... + 8703.

It is an arithmetic number, because the mean of its divisors is an integer number (340600).

Almost surely, 2^3218481 is an apocalyptic number.

It is an amenable number.

3218481 is a deficient number, since it is larger than the sum of its proper divisors (2231119).

3218481 is a wasteful number, since it uses less digits than its factorization.

3218481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17045 (or 17039 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 3218481 is about 1794.0125417622. The cubic root of 3218481 is about 147.6444013420.

The spelling of 3218481 in words is "three million, two hundred eighteen thousand, four hundred eighty-one".