28815726968384 has 28 divisors (see below), whose sum is σ = 57181850527104. Its totient is φ = 14407701638784.

The previous prime is 28815726968363. The next prime is 28815726968387. The reversal of 28815726968384 is 48386962751882.

It is a super-2 number, since 2×28815726968384² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28815726968387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3317897 + ... + 8284919.

Almost surely, 2^{28815726968384} is an apocalyptic number.

It is an amenable number.

28815726968384 is a deficient number, since it is larger than the sum of its proper divisors (28366123558720).

28815726968384 is an equidigital number, since it uses as much as digits as its factorization.

28815726968384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5057682 (or 5057672 counting only the distinct ones).

The product of its digits is 2229534720, while the sum is 77.

The spelling of 28815726968384 in words is "twenty-eight trillion, eight hundred fifteen billion, seven hundred twenty-six million, nine hundred sixty-eight thousand, three hundred eighty-four".