28704053273 has 4 divisors (see below), whose sum is σ = 32804632320. Its totient is φ = 24603474228.

The previous prime is 28704053267. The next prime is 28704053299. The reversal of 28704053273 is 37235040782.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37235040782 = 2 ⋅18617520391.

It is a cyclic number.

It is not a de Polignac number, because 28704053273 - 2²⁶ = 28636944409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28704053273.

It is not an unprimeable number, because it can be changed into a prime (28704056273) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2050289513 + ... + 2050289526.

It is an arithmetic number, because the mean of its divisors is an integer number (8201158080).

Almost surely, 2^28704053273 is an apocalyptic number.

It is an amenable number.

28704053273 is a deficient number, since it is larger than the sum of its proper divisors (4100579047).

28704053273 is an equidigital number, since it uses as much as digits as its factorization.

28704053273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4100579046.

The product of its (nonzero) digits is 282240, while the sum is 41.

The spelling of 28704053273 in words is "twenty-eight billion, seven hundred four million, fifty-three thousand, two hundred seventy-three".