3223840 has 24 divisors (see below), whose sum is σ = 7616700. Its totient is φ = 1289472.

The previous prime is 3223837. The next prime is 3223849. The reversal of 3223840 is 483223.

It can be written as a sum of positive squares in 2 ways, for example, as 3196944 + 26896 = 1788^2 + 164^2 .

It is not an unprimeable number, because it can be changed into a prime (3223849) by changing a digit.

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, 9915 + ... + 10234.

Almost surely, 2^3223840 is an apocalyptic number.

It is an amenable number.

3223840 is an abundant number, since it is smaller than the sum of its proper divisors (4392860).

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

3223840 is a wasteful number, since it uses less digits than its factorization.

3223840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20164 (or 20156 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 3223840 is about 1795.5054998523. The cubic root of 3223840 is about 147.7263020485.

The spelling of 3223840 in words is "three million, two hundred twenty-three thousand, eight hundred forty".