28976487845 has 8 divisors (see below), whose sum is σ = 36817184664. Its totient is φ = 21817590784.

The previous prime is 28976487823. The next prime is 28976487853. The reversal of 28976487845 is 54878467982.

It can be written as a sum of positive squares in 4 ways, for example, as 2121799969 + 26854687876 = 46063^2 + 163874^2 .

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 28976487845 - 2⁶ = 28976487781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 170449844 + ... + 170450013.

It is an arithmetic number, because the mean of its divisors is an integer number (4602148083).

Almost surely, 2^28976487845 is an apocalyptic number.

It is an amenable number.

28976487845 is a deficient number, since it is larger than the sum of its proper divisors (7840696819).

28976487845 is a wasteful number, since it uses less digits than its factorization.

28976487845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340899879.

The product of its digits is 216760320, while the sum is 68.

The spelling of 28976487845 in words is "twenty-eight billion, nine hundred seventy-six million, four hundred eighty-seven thousand, eight hundred forty-five".