34020320440 has 128 divisors (see below), whose sum is σ = 84023490240. Its totient is φ = 12344057856.

The previous prime is 34020320417. The next prime is 34020320513. The reversal of 34020320440 is 4402302043.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2685802 + ... + 2698438.

Almost surely, 2^34020320440 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 34020320440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42011745120).

34020320440 is an abundant number, since it is smaller than the sum of its proper divisors (50003169800).

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

34020320440 is a wasteful number, since it uses less digits than its factorization.

34020320440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12809 (or 12805 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 34020320440 its reverse (4402302043), we get a palindrome (38422622483).

The spelling of 34020320440 in words is "thirty-four billion, twenty million, three hundred twenty thousand, four hundred forty".