3218472 has 24 divisors (see below), whose sum is σ = 8716890. Its totient is φ = 1072800.

The previous prime is 3218471. The next prime is 3218473. The reversal of 3218472 is 2748123.

It is an interprime number because it is at equal distance from previous prime (3218471) and next prime (3218473).

It can be written as a sum of positive squares in only one way, i.e., 3218436 + 36 = 1794^2 + 6^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (3218471) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22279 + ... + 22422.

Almost surely, 2^3218472 is an apocalyptic number.

It is an amenable number.

3218472 is an abundant number, since it is smaller than the sum of its proper divisors (5498418).

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

3218472 is a wasteful number, since it uses less digits than its factorization.

3218472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44713 (or 44706 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 3218472 is about 1794.0100334168. The cubic root of 3218472 is about 147.6442637201.

The spelling of 3218472 in words is "three million, two hundred eighteen thousand, four hundred seventy-two".