3448731728 has 80 divisors (see below), whose sum is σ = 7466188800. Its totient is φ = 1532943360.

The previous prime is 3448731721. The next prime is 3448731731. The reversal of 3448731728 is 8271378443.

3448731728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3448731721) 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, 671153 + ... + 676271.

It is an arithmetic number, because the mean of its divisors is an integer number (93327360).

Almost surely, 2^3448731728 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 3448731728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3733094400).

3448731728 is an abundant number, since it is smaller than the sum of its proper divisors (4017457072).

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

3448731728 is a wasteful number, since it uses less digits than its factorization.

3448731728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5260 (or 5254 counting only the distinct ones).

The product of its digits is 903168, while the sum is 47.

The square root of 3448731728 is about 58725.9033817276. The cubic root of 3448731728 is about 1510.8446260729.

The spelling of 3448731728 in words is "three billion, four hundred forty-eight million, seven hundred thirty-one thousand, seven hundred twenty-eight".