28005078328 has 24 divisors (see below), whose sum is σ = 53005024800. Its totient is φ = 13871628944.

The previous prime is 28005078317. The next prime is 28005078337. The reversal of 28005078328 is 82387050082.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 61288 + ... + 244471.

It is an arithmetic number, because the mean of its divisors is an integer number (2208542700).

Almost surely, 2^28005078328 is an apocalyptic number.

It is an amenable number.

28005078328 is a deficient number, since it is larger than the sum of its proper divisors (24999946472).

28005078328 is a wasteful number, since it uses less digits than its factorization.

28005078328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305979 (or 305868 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 28005078328 in words is "twenty-eight billion, five million, seventy-eight thousand, three hundred twenty-eight".