28383512005 has 4 divisors (see below), whose sum is σ = 34060214412. Its totient is φ = 22706809600.

The previous prime is 28383511999. The next prime is 28383512023. The reversal of 28383512005 is 50021538382.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20398123684 + 7985388321 = 142822^2 + 89361^2 .

It is not a de Polignac number, because 28383512005 - 2¹⁵ = 28383479237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 2838351196 + ... + 2838351205.

It is an arithmetic number, because the mean of its divisors is an integer number (8515053603).

Almost surely, 2^28383512005 is an apocalyptic number.

It is an amenable number.

28383512005 is a deficient number, since it is larger than the sum of its proper divisors (5676702407).

28383512005 is an equidigital number, since it uses as much as digits as its factorization.

28383512005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5676702406.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 28383512005 in words is "twenty-eight billion, three hundred eighty-three million, five hundred twelve thousand, five".