3218256 has 30 divisors (see below), whose sum is σ = 9007050. Its totient is φ = 1072704.

The previous prime is 3218233. The next prime is 3218261. The reversal of 3218256 is 6528123.

It can be written as a sum of positive squares in only one way, i.e., 2250000 + 968256 = 1500^2 + 984^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11031 + ... + 11318.

It is an arithmetic number, because the mean of its divisors is an integer number (300235).

Almost surely, 2^3218256 is an apocalyptic number.

3218256 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3218256 is an abundant number, since it is smaller than the sum of its proper divisors (5788794).

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

3218256 is a wasteful number, since it uses less digits than its factorization.

3218256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22363 (or 22354 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 3218256 is about 1793.9498320745. The cubic root of 3218256 is about 147.6409607164.

The spelling of 3218256 in words is "three million, two hundred eighteen thousand, two hundred fifty-six".