28601743009 has 12 divisors (see below), whose sum is σ = 33274938564. Its totient is φ = 24513183744.

The previous prime is 28601743003. The next prime is 28601743031. The reversal of 28601743009 is 90034710682.

It can be written as a sum of positive squares in 2 ways, for example, as 26011238400 + 2590504609 = 161280^2 + 50897^2 .

It is a de Polignac number, because none of the positive numbers 2^k-28601743009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28601743003) 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 11 ways as a sum of consecutive naturals, for example, 544929 + ... + 595105.

It is an arithmetic number, because the mean of its divisors is an integer number (2772911547).

Almost surely, 2^28601743009 is an apocalyptic number.

It is an amenable number.

28601743009 is a deficient number, since it is larger than the sum of its proper divisors (4673195555).

28601743009 is a wasteful number, since it uses less digits than its factorization.

28601743009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61824 (or 61817 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 28601743009 in words is "twenty-eight billion, six hundred one million, seven hundred forty-three thousand, nine".