28672016057 has 6 divisors (see below), whose sum is σ = 28849023882. Its totient is φ = 28496087712.

The previous prime is 28672016029. The next prime is 28672016089. The reversal of 28672016057 is 75061027682.

It can be written as a sum of positive squares in only one way, i.e., 24895790656 + 3776225401 = 157784^2 + 61451^2 .

It is a de Polignac number, because none of the positive numbers 2^k-28672016057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28672015999 and 28672016017.

It is not an unprimeable number, because it can be changed into a prime (28672016657) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 513008 + ... + 566145.

It is an arithmetic number, because the mean of its divisors is an integer number (4808170647).

Almost surely, 2^28672016057 is an apocalyptic number.

It is an amenable number.

28672016057 is a deficient number, since it is larger than the sum of its proper divisors (177007825).

28672016057 is an equidigital number, since it uses as much as digits as its factorization.

28672016057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079479 (or 1079316 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 44.

The spelling of 28672016057 in words is "twenty-eight billion, six hundred seventy-two million, sixteen thousand, fifty-seven".