3217240 has 64 divisors (see below), whose sum is σ = 8164800. Its totient is φ = 1132032.

The previous prime is 3217219. The next prime is 3217241. The reversal of 3217240 is 427123.

3217240 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 not an unprimeable number, because it can be changed into a prime (3217241) 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, 11826 + ... + 12094.

It is an arithmetic number, because the mean of its divisors is an integer number (127575).

Almost surely, 2^3217240 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 3217240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4082400).

3217240 is an abundant number, since it is smaller than the sum of its proper divisors (4947560).

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

3217240 is a wasteful number, since it uses less digits than its factorization.

3217240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 3217240 is about 1793.6666356935. Note that the first 4 decimals coincide. The cubic root of 3217240 is about 147.6254223830.

The spelling of 3217240 in words is "three million, two hundred seventeen thousand, two hundred forty".