28811934307 has 4 divisors (see below), whose sum is σ = 31028236960. Its totient is φ = 26595631656.

The previous prime is 28811934293. The next prime is 28811934323. The reversal of 28811934307 is 70343911882.

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 28811934307 - 2¹⁵ = 28811901539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28811934707) 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 3 ways as a sum of consecutive naturals, for example, 1108151307 + ... + 1108151332.

It is an arithmetic number, because the mean of its divisors is an integer number (7757059240).

Almost surely, 2^28811934307 is an apocalyptic number.

28811934307 is a deficient number, since it is larger than the sum of its proper divisors (2216302653).

28811934307 is a wasteful number, since it uses less digits than its factorization.

28811934307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2216302652.

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 28811934307 in words is "twenty-eight billion, eight hundred eleven million, nine hundred thirty-four thousand, three hundred seven".