3128572667 has 8 divisors (see below), whose sum is σ = 3446781552. Its totient is φ = 2815996000.

The previous prime is 3128572637. The next prime is 3128572673. The reversal of 3128572667 is 7662758213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3128572667 - 2¹² = 3128568571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3128572637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1406888 + ... + 1409109.

It is an arithmetic number, because the mean of its divisors is an integer number (430847694).

Almost surely, 2^3128572667 is an apocalyptic number.

3128572667 is a deficient number, since it is larger than the sum of its proper divisors (318208885).

3128572667 is a wasteful number, since it uses less digits than its factorization.

3128572667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2816109.

The product of its digits is 846720, while the sum is 47.

The square root of 3128572667 is about 55933.6452146648. The cubic root of 3128572667 is about 1462.5658058100.

The spelling of 3128572667 in words is "three billion, one hundred twenty-eight million, five hundred seventy-two thousand, six hundred sixty-seven".