3220344 has 64 divisors (see below), whose sum is σ = 9482400. Its totient is φ = 1009152.

The previous prime is 3220319. The next prime is 3220351. The reversal of 3220344 is 4430223.

3220344 = T₆₀₇ + T₆₀₈ + ... + T₆₂₃.

3220344 is a `hidden beast` number, since 322 + 0 + 344 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3234 + ... + 4110.

Almost surely, 2^3220344 is an apocalyptic number.

3220344 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3220344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4741200).

3220344 is an abundant number, since it is smaller than the sum of its proper divisors (6262056).

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

3220344 is a wasteful number, since it uses less digits than its factorization.

3220344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909 (or 899 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 3220344 is about 1794.5316937853. The cubic root of 3220344 is about 147.6728835633.

Adding to 3220344 its reverse (4430223), we get a palindrome (7650567).

The spelling of 3220344 in words is "three million, two hundred twenty thousand, three hundred forty-four".