3320427640 has 64 divisors (see below), whose sum is σ = 7778877120. Its totient is φ = 1274496000.

The previous prime is 3320427629. The next prime is 3320427647. The reversal of 3320427640 is 467240233.

It is a super-2 number, since 2×3320427640² = 22050479424951939200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3320427647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83445 + ... + 116635.

It is an arithmetic number, because the mean of its divisors is an integer number (121544955).

Almost surely, 2^3320427640 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 3320427640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3889438560).

3320427640 is an abundant number, since it is smaller than the sum of its proper divisors (4458449480).

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

3320427640 is a wasteful number, since it uses less digits than its factorization.

3320427640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33304 (or 33300 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 31.

The square root of 3320427640 is about 57623.1519443357. The cubic root of 3320427640 is about 1491.8712342783.

Adding to 3320427640 its reverse (467240233), we get a palindrome (3787667873).

The spelling of 3320427640 in words is "three billion, three hundred twenty million, four hundred twenty-seven thousand, six hundred forty".