28671673073 has 4 divisors (see below), whose sum is σ = 29099608560. Its totient is φ = 28243737588.

The previous prime is 28671673057. The next prime is 28671673081. The reversal of 28671673073 is 37037617682.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28671673073 - 2⁴ = 28671673057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28671673003) 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, 213967643 + ... + 213967776.

It is an arithmetic number, because the mean of its divisors is an integer number (7274902140).

Almost surely, 2^28671673073 is an apocalyptic number.

It is an amenable number.

28671673073 is a deficient number, since it is larger than the sum of its proper divisors (427935487).

28671673073 is an equidigital number, since it uses as much as digits as its factorization.

28671673073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427935486.

The product of its (nonzero) digits is 1778112, while the sum is 50.

The spelling of 28671673073 in words is "twenty-eight billion, six hundred seventy-one million, six hundred seventy-three thousand, seventy-three".