3222656 has 32 divisors (see below), whose sum is σ = 6802380. Its totient is φ = 1515520.

The previous prime is 3222643. The next prime is 3222677. The reversal of 3222656 is 6562223.

It can be written as a sum of positive squares in 2 ways, for example, as 3182656 + 40000 = 1784^2 + 200^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a d-powerful number, because it can be written as 3¹¹ + 2⁵ + 2¹³ + 2¹⁹ + 6⁷ + 5⁹ + 6⁷ .

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, 1436 + ... + 2916.

Almost surely, 2^3222656 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 3222656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3401190).

3222656 is an abundant number, since it is smaller than the sum of its proper divisors (3579724).

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

3222656 is a wasteful number, since it uses less digits than its factorization.

3222656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512 (or 1500 counting only the distinct ones).

The product of its digits is 4320, while the sum is 26.

The square root of 3222656 is about 1795.1757574121. The cubic root of 3222656 is about 147.7082149889.

Adding to 3222656 its reverse (6562223), we get a palindrome (9784879).

The spelling of 3222656 in words is "three million, two hundred twenty-two thousand, six hundred fifty-six".