3212440 has 96 divisors (see below), whose sum is σ = 9234000. Its totient is φ = 994560.

The previous prime is 3212431. The next prime is 3212453. The reversal of 3212440 is 442123.

3212440 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 21486 + ... + 21634.

Almost surely, 2^3212440 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 3212440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4617000).

3212440 is an abundant number, since it is smaller than the sum of its proper divisors (6021560).

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

3212440 is a wasteful number, since it uses less digits than its factorization.

3212440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 3212440 is about 1792.3280949648. The cubic root of 3212440 is about 147.5519686647.

Adding to 3212440 its reverse (442123), we get a palindrome (3654563).

The spelling of 3212440 in words is "three million, two hundred twelve thousand, four hundred forty".