28000328078 has 16 divisors (see below), whose sum is σ = 42663283200. Its totient is φ = 13779893400.

The previous prime is 28000328077. The next prime is 28000328089. The reversal of 28000328078 is 87082300082.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28000328077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79538 + ... + 249653.

It is an arithmetic number, because the mean of its divisors is an integer number (2666455200).

Almost surely, 2^28000328078 is an apocalyptic number.

28000328078 is a deficient number, since it is larger than the sum of its proper divisors (14662955122).

28000328078 is a wasteful number, since it uses less digits than its factorization.

28000328078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329863.

The product of its (nonzero) digits is 43008, while the sum is 38.

The spelling of 28000328078 in words is "twenty-eight billion, three hundred twenty-eight thousand, seventy-eight".