28300243733 has 4 divisors (see below), whose sum is σ = 28580444268. Its totient is φ = 28020043200.

The previous prime is 28300243721. The next prime is 28300243753. The reversal of 28300243733 is 33734200382.

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 13202469604 + 15097774129 = 114902^2 + 122873^2 .

It is a cyclic number.

It is not a de Polignac number, because 28300243733 - 2¹⁰ = 28300242709 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28300243693 and 28300243702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28300243703) 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, 140100116 + ... + 140100317.

It is an arithmetic number, because the mean of its divisors is an integer number (7145111067).

Almost surely, 2^28300243733 is an apocalyptic number.

It is an amenable number.

28300243733 is a deficient number, since it is larger than the sum of its proper divisors (280200535).

28300243733 is a wasteful number, since it uses less digits than its factorization.

28300243733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280200534.

The product of its (nonzero) digits is 72576, while the sum is 35.

The spelling of 28300243733 in words is "twenty-eight billion, three hundred million, two hundred forty-three thousand, seven hundred thirty-three".