3128748772 has 12 divisors (see below), whose sum is σ = 5763484720. Its totient is φ = 1482038856.

The previous prime is 3128748751. The next prime is 3128748773. The reversal of 3128748772 is 2778478213.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (3128748773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20583798 + ... + 20583949.

Almost surely, 2^3128748772 is an apocalyptic number.

It is an amenable number.

3128748772 is a deficient number, since it is larger than the sum of its proper divisors (2634735948).

3128748772 is a wasteful number, since it uses less digits than its factorization.

3128748772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41167770 (or 41167768 counting only the distinct ones).

The product of its digits is 1053696, while the sum is 49.

The square root of 3128748772 is about 55935.2194239014. The cubic root of 3128748772 is about 1462.5932475378.

The spelling of 3128748772 in words is "three billion, one hundred twenty-eight million, seven hundred forty-eight thousand, seven hundred seventy-two".