3253520 has 40 divisors (see below), whose sum is σ = 7689984. Its totient is φ = 1279872.

The previous prime is 3253519. The next prime is 3253529. The reversal of 3253520 is 253523.

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

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3253492 and 3253501.

It is not an unprimeable number, because it can be changed into a prime (3253529) 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, 5057 + ... + 5663.

Almost surely, 2^3253520 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 3253520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3844992).

3253520 is an abundant number, since it is smaller than the sum of its proper divisors (4436464).

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

3253520 is a wasteful number, since it uses less digits than its factorization.

3253520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687 (or 681 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 3253520 is about 1803.7516458759. The cubic root of 3253520 is about 148.1782609776.

It can be divided in two parts, 3253 and 520, that added together give a palindrome (3773).

The spelling of 3253520 in words is "three million, two hundred fifty-three thousand, five hundred twenty".