28984396755 has 32 divisors (see below), whose sum is σ = 49404294144. Its totient is φ = 14459751936.

The previous prime is 28984396751. The next prime is 28984396757. The reversal of 28984396755 is 55769348982.

It is not a de Polignac number, because 28984396755 - 2² = 28984396751 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28984396751) 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 31 ways as a sum of consecutive naturals, for example, 307099 + ... + 390228.

It is an arithmetic number, because the mean of its divisors is an integer number (1543884192).

Almost surely, 2^28984396755 is an apocalyptic number.

28984396755 is a deficient number, since it is larger than the sum of its proper divisors (20419897389).

28984396755 is a wasteful number, since it uses less digits than its factorization.

28984396755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697515.

The product of its digits is 130636800, while the sum is 66.

The spelling of 28984396755 in words is "twenty-eight billion, nine hundred eighty-four million, three hundred ninety-six thousand, seven hundred fifty-five".