3218872 has 8 divisors (see below), whose sum is σ = 6035400. Its totient is φ = 1609432.

The previous prime is 3218861. The next prime is 3218893. The reversal of 3218872 is 2788123.

3218872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×3218872² = 20722273904768, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 201172 + ... + 201187.

It is an arithmetic number, because the mean of its divisors is an integer number (754425).

Almost surely, 2^3218872 is an apocalyptic number.

It is an amenable number.

3218872 is a deficient number, since it is larger than the sum of its proper divisors (2816528).

3218872 is a wasteful number, since it uses less digits than its factorization.

3218872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402365 (or 402361 counting only the distinct ones).

The product of its digits is 5376, while the sum is 31.

The square root of 3218872 is about 1794.1215120498. The cubic root of 3218872 is about 147.6503800033.

The spelling of 3218872 in words is "three million, two hundred eighteen thousand, eight hundred seventy-two".