3253840 has 40 divisors (see below), whose sum is σ = 7666920. Its totient is φ = 1284096.

The previous prime is 3253823. The next prime is 3253841. The reversal of 3253840 is 483523.

It can be written as a sum of positive squares in 4 ways, for example, as 404496 + 2849344 = 636^2 + 1688^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3253841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6892 + ... + 7348.

It is an arithmetic number, because the mean of its divisors is an integer number (191673).

Almost surely, 2^3253840 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 3253840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3833460).

3253840 is an abundant number, since it is smaller than the sum of its proper divisors (4413080).

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

3253840 is a wasteful number, since it uses less digits than its factorization.

3253840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559 (or 553 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 3253840 is about 1803.8403477026. The cubic root of 3253840 is about 148.1831188432.

The spelling of 3253840 in words is "three million, two hundred fifty-three thousand, eight hundred forty".