3421305440 has 144 divisors (see below), whose sum is σ = 9458349264. Its totient is φ = 1166054400.

The previous prime is 3421305431. The next prime is 3421305443. The reversal of 3421305440 is 445031243.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3421305443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1417835 + ... + 1420245.

It is an arithmetic number, because the mean of its divisors is an integer number (65682981).

Almost surely, 2^3421305440 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 3421305440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4729174632).

3421305440 is an abundant number, since it is smaller than the sum of its proper divisors (6037043824).

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

3421305440 is a wasteful number, since it uses less digits than its factorization.

3421305440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621 (or 2606 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 3421305440 is about 58491.9262804705. The cubic root of 3421305440 is about 1506.8289284960.

Adding to 3421305440 its reverse (445031243), we get a palindrome (3866336683).

The spelling of 3421305440 in words is "three billion, four hundred twenty-one million, three hundred five thousand, four hundred forty".