28033280279 has 16 divisors (see below), whose sum is σ = 30981424320. Its totient is φ = 25230120960.

The previous prime is 28033280267. The next prime is 28033280281. The reversal of 28033280279 is 97208233082.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28033280279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28033280299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1841459 + ... + 1856619.

It is an arithmetic number, because the mean of its divisors is an integer number (1936339020).

Almost surely, 2^28033280279 is an apocalyptic number.

28033280279 is a deficient number, since it is larger than the sum of its proper divisors (2948144041).

28033280279 is a wasteful number, since it uses less digits than its factorization.

28033280279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19930.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 28033280279 in words is "twenty-eight billion, thirty-three million, two hundred eighty thousand, two hundred seventy-nine".