5166446728 has 32 divisors (see below), whose sum is σ = 9908751960. Its totient is φ = 2524654080.

The previous prime is 5166446723. The next prime is 5166446797. The reversal of 5166446728 is 8276446615.

It can be written as a sum of positive squares in 4 ways, for example, as 2972648484 + 2193798244 = 54522^2 + 46838^2 .

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

It is not an unprimeable number, because it can be changed into a prime (5166446723) 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, 42900 + ... + 110332.

Almost surely, 2^5166446728 is an apocalyptic number.

It is an amenable number.

5166446728 is a deficient number, since it is larger than the sum of its proper divisors (4742305232).

5166446728 is a wasteful number, since it uses less digits than its factorization.

5166446728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67657 (or 67653 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 49.

The square root of 5166446728 is about 71877.9989148279. The cubic root of 5166446728 is about 1728.7438650150.

The spelling of 5166446728 in words is "five billion, one hundred sixty-six million, four hundred forty-six thousand, seven hundred twenty-eight".