3306242640 has 160 divisors (see below), whose sum is σ = 10735312896. Its totient is φ = 840153600.

The previous prime is 3306242627. The next prime is 3306242647. The reversal of 3306242640 is 462426033.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 3306242598 and 3306242607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3306242647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1693665 + ... + 1695615.

Almost surely, 2^3306242640 is an apocalyptic number.

3306242640 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 3306242640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5367656448).

3306242640 is an abundant number, since it is smaller than the sum of its proper divisors (7429070256).

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

3306242640 is a wasteful number, since it uses less digits than its factorization.

3306242640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2297 (or 2291 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

The square root of 3306242640 is about 57499.9359999644. The cubic root of 3306242640 is about 1489.7437572655.

Adding to 3306242640 its reverse (462426033), we get a palindrome (3768668673).

The spelling of 3306242640 in words is "three billion, three hundred six million, two hundred forty-two thousand, six hundred forty".