3397705728 has 112 divisors (see below), whose sum is σ = 9455481216. Its totient is φ = 1083146240.

The previous prime is 3397705709. The next prime is 3397705733. The reversal of 3397705728 is 8275077933.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562243 + ... + 568253.

Almost surely, 2^3397705728 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 3397705728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4727740608).

3397705728 is an abundant number, since it is smaller than the sum of its proper divisors (6057775488).

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

3397705728 is an equidigital number, since it uses as much as digits as its factorization.

3397705728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6063 (or 6039 counting only the distinct ones).

The product of its (nonzero) digits is 2222640, while the sum is 51.

The square root of 3397705728 is about 58289.8424084334. The cubic root of 3397705728 is about 1503.3562961386.

The spelling of 3397705728 in words is "three billion, three hundred ninety-seven million, seven hundred five thousand, seven hundred twenty-eight".