5128970640 has 80 divisors (see below), whose sum is σ = 15924427200. Its totient is φ = 1365607936.

The previous prime is 5128970621. The next prime is 5128970647. The reversal of 5128970640 is 460798215.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×5128970640³ (a number of 30 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5128970592 and 5128970601.

It is not an unprimeable number, because it can be changed into a prime (5128970647) 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, 141946 + ... + 174374.

It is an arithmetic number, because the mean of its divisors is an integer number (199055340).

Almost surely, 2^5128970640 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 5128970640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7962213600).

5128970640 is an abundant number, since it is smaller than the sum of its proper divisors (10795456560).

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

5128970640 is a wasteful number, since it uses less digits than its factorization.

5128970640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33104 (or 33098 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 5128970640 is about 71616.8320997236. The cubic root of 5128970640 is about 1724.5537614896.

The spelling of 5128970640 in words is "five billion, one hundred twenty-eight million, nine hundred seventy thousand, six hundred forty".