3323404640 has 96 divisors (see below), whose sum is σ = 8311675680. Its totient is φ = 1253597184.

The previous prime is 3323404549. The next prime is 3323404649. The reversal of 3323404640 is 464043233.

It is a super-2 number, since 2×3323404640² = 22090036802347059200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3323404649) 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, 191192 + ... + 207848.

It is an arithmetic number, because the mean of its divisors is an integer number (86579955).

Almost surely, 2^3323404640 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 3323404640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4155837840).

3323404640 is an abundant number, since it is smaller than the sum of its proper divisors (4988271040).

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

3323404640 is a wasteful number, since it uses less digits than its factorization.

3323404640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16744 (or 16736 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 29.

The square root of 3323404640 is about 57648.9777879886. The cubic root of 3323404640 is about 1492.3169573891.

Adding to 3323404640 its reverse (464043233), we get a palindrome (3787447873).

The spelling of 3323404640 in words is "three billion, three hundred twenty-three million, four hundred four thousand, six hundred forty".