3218464 has 24 divisors (see below), whose sum is σ = 6486480. Its totient is φ = 1571136.

The previous prime is 3218447. The next prime is 3218471. The reversal of 3218464 is 4648123.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207 + ... + 2545.

It is an arithmetic number, because the mean of its divisors is an integer number (270270).

Almost surely, 2^3218464 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 3218464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3243240).

3218464 is an abundant number, since it is smaller than the sum of its proper divisors (3268016).

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

3218464 is a wasteful number, since it uses less digits than its factorization.

3218464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2392 (or 2384 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 3218464 is about 1794.0078037734. The cubic root of 3218464 is about 147.6441413892.

Subtracting from 3218464 its sum of digits (28), we obtain a square (3218436 = 1794²).

It can be divided in two parts, 32 and 18464, that added together give a square (18496 = 136²).

The spelling of 3218464 in words is "three million, two hundred eighteen thousand, four hundred sixty-four".