3128756875 has 10 divisors (see below), whose sum is σ = 3909695372. Its totient is φ = 2503005000.

The previous prime is 3128756867. The next prime is 3128756879. The reversal of 3128756875 is 5786578213.

It is a happy number.

It is not a de Polignac number, because 3128756875 - 2³ = 3128756867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3128756879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2502381 + ... + 2503630.

Almost surely, 2^3128756875 is an apocalyptic number.

3128756875 is a deficient number, since it is larger than the sum of its proper divisors (780938497).

3128756875 is an frugal number, since it uses more digits than its factorization.

3128756875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5006031 (or 5006016 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 52.

The square root of 3128756875 is about 55935.2918558579. The cubic root of 3128756875 is about 1462.5945101707.

The spelling of 3128756875 in words is "three billion, one hundred twenty-eight million, seven hundred fifty-six thousand, eight hundred seventy-five".