28878207300259 has 4 divisors (see below), whose sum is σ = 28890155257704. Its totient is φ = 28866259342816.

The previous prime is 28878207300251. The next prime is 28878207300263. The reversal of 28878207300259 is 95200370287882.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28878207300259 - 2³ = 28878207300251 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28878207300197 and 28878207300206.

It is not an unprimeable number, because it can be changed into a prime (28878207300251) 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, 5973975097 + ... + 5973979930.

It is an arithmetic number, because the mean of its divisors is an integer number (7222538814426).

Almost surely, 2^{28878207300259} is an apocalyptic number.

28878207300259 is a deficient number, since it is larger than the sum of its proper divisors (11947957445).

28878207300259 is a wasteful number, since it uses less digits than its factorization.

28878207300259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11947957444.

The product of its (nonzero) digits is 27095040, while the sum is 61.

The spelling of 28878207300259 in words is "twenty-eight trillion, eight hundred seventy-eight billion, two hundred seven million, three hundred thousand, two hundred fifty-nine".