3225240 has 144 divisors (see below), whose sum is σ = 11494080. Its totient is φ = 783360.

The previous prime is 3225227. The next prime is 3225247. The reversal of 3225240 is 425223.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3225247) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 104025 + ... + 104055.

It is an arithmetic number, because the mean of its divisors is an integer number (79820).

Almost surely, 2^3225240 is an apocalyptic number.

3225240 is a gapful number since it is divisible by the number (30) 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 3225240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5747040).

3225240 is an abundant number, since it is smaller than the sum of its proper divisors (8268840).

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

3225240 is a wasteful number, since it uses less digits than its factorization.

3225240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 3225240 is about 1795.8953198892. The cubic root of 3225240 is about 147.7476830612.

The spelling of 3225240 in words is "three million, two hundred twenty-five thousand, two hundred forty".