3216040 has 64 divisors (see below), whose sum is σ = 7756560. Its totient is φ = 1198080.

The previous prime is 3216029. The next prime is 3216041. The reversal of 3216040 is 406123.

It can be written as a sum of positive squares in 8 ways, for example, as 1572516 + 1643524 = 1254^2 + 1282^2 .

It is not an unprimeable number, because it can be changed into a prime (3216041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60654 + ... + 60706.

Almost surely, 2^3216040 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 3216040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3878280).

3216040 is an abundant number, since it is smaller than the sum of its proper divisors (4540520).

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

3216040 is a wasteful number, since it uses less digits than its factorization.

3216040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 3216040 is about 1793.3320941755. The cubic root of 3216040 is about 147.6070658065.

The spelling of 3216040 in words is "three million, two hundred sixteen thousand, forty".