28173824753 has 4 divisors (see below), whose sum is σ = 29831108580. Its totient is φ = 26516540928.

The previous prime is 28173824729. The next prime is 28173824797. The reversal of 28173824753 is 35742837182.

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 12716621824 + 15457202929 = 112768^2 + 124327^2 .

It is a cyclic number.

It is not a de Polignac number, because 28173824753 - 2¹² = 28173820657 is a prime.

It is a super-2 number, since 2×28173824753² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28173824453) 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, 828641888 + ... + 828641921.

It is an arithmetic number, because the mean of its divisors is an integer number (7457777145).

Almost surely, 2^28173824753 is an apocalyptic number.

It is an amenable number.

28173824753 is a deficient number, since it is larger than the sum of its proper divisors (1657283827).

28173824753 is a wasteful number, since it uses less digits than its factorization.

28173824753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657283826.

The product of its digits is 2257920, while the sum is 50.

The spelling of 28173824753 in words is "twenty-eight billion, one hundred seventy-three million, eight hundred twenty-four thousand, seven hundred fifty-three".