3256240 has 80 divisors (see below), whose sum is σ = 8499456. Its totient is φ = 1152000.

The previous prime is 3256229. The next prime is 3256247. The reversal of 3256240 is 426523.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3256247) 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, 32190 + ... + 32290.

Almost surely, 2^3256240 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 3256240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4249728).

3256240 is an abundant number, since it is smaller than the sum of its proper divisors (5243216).

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

3256240 is a wasteful number, since it uses less digits than its factorization.

3256240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 3256240 is about 1804.5054724217. The cubic root of 3256240 is about 148.2195426873.

The spelling of 3256240 in words is "three million, two hundred fifty-six thousand, two hundred forty".