3498697728 has 66 divisors (see below), whose sum is σ = 10102440374. Its totient is φ = 1166229504.

The previous prime is 3498697711. The next prime is 3498697747. The reversal of 3498697728 is 8277968943.

It can be written as a sum of positive squares in only one way, i.e., 1849688064 + 1649009664 = 43008^2 + 40608^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 180601 + ... + 199032.

Almost surely, 2^3498697728 is an apocalyptic number.

It is an amenable number.

3498697728 is an abundant number, since it is smaller than the sum of its proper divisors (6603742646).

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

3498697728 is a wasteful number, since it uses less digits than its factorization.

3498697728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379659 (or 379638 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 63.

The square root of 3498697728 is about 59149.7905997984. The cubic root of 3498697728 is about 1518.1061547306.

The spelling of 3498697728 in words is "three billion, four hundred ninety-eight million, six hundred ninety-seven thousand, seven hundred twenty-eight".