3128726445 has 16 divisors (see below), whose sum is σ = 5391036672. Its totient is φ = 1540296000.

The previous prime is 3128726443. The next prime is 3128726449. The reversal of 3128726445 is 5446278213.

It is not a de Polignac number, because 3128726445 - 2¹ = 3128726443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3128726397 and 3128726406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3128726443) 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 15 ways as a sum of consecutive naturals, for example, 8022181 + ... + 8022570.

It is an arithmetic number, because the mean of its divisors is an integer number (336939792).

Almost surely, 2^3128726445 is an apocalyptic number.

It is an amenable number.

3128726445 is a deficient number, since it is larger than the sum of its proper divisors (2262310227).

3128726445 is a wasteful number, since it uses less digits than its factorization.

3128726445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16044772.

The product of its digits is 322560, while the sum is 42.

The square root of 3128726445 is about 55935.0198444588. The cubic root of 3128726445 is about 1462.5897684690.

The spelling of 3128726445 in words is "three billion, one hundred twenty-eight million, seven hundred twenty-six thousand, four hundred forty-five".