3128698064 has 40 divisors (see below), whose sum is σ = 6270432000. Its totient is φ = 1510732800.

The previous prime is 3128698057. The next prime is 3128698091. The reversal of 3128698064 is 4608968213.

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, 241184 + ... + 253824.

It is an arithmetic number, because the mean of its divisors is an integer number (156760800).

Almost surely, 2^3128698064 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 3128698064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3135216000).

3128698064 is an abundant number, since it is smaller than the sum of its proper divisors (3141733936).

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

3128698064 is a wasteful number, since it uses less digits than its factorization.

3128698064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13179 (or 13173 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 3128698064 is about 55934.7661477189. The cubic root of 3128698064 is about 1462.5853460215.

The spelling of 3128698064 in words is "three billion, one hundred twenty-eight million, six hundred ninety-eight thousand, sixty-four".