3453221440 has 112 divisors (see below), whose sum is σ = 8558198784. Its totient is φ = 1325721600.

The previous prime is 3453221267. The next prime is 3453221477. The reversal of 3453221440 is 441223543.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3453221399 and 3453221408.

It is an unprimeable number.

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, 1258470 + ... + 1261210.

Almost surely, 2^3453221440 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 3453221440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4279099392).

3453221440 is an abundant number, since it is smaller than the sum of its proper divisors (5104977344).

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

3453221440 is a wasteful number, since it uses less digits than its factorization.

3453221440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916 (or 2906 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 3453221440 is about 58764.1169422293. The cubic root of 3453221440 is about 1511.4999699623.

Adding to 3453221440 its reverse (441223543), we get a palindrome (3894444983).

The spelling of 3453221440 in words is "three billion, four hundred fifty-three million, two hundred twenty-one thousand, four hundred forty".