28806000313 has 16 divisors (see below), whose sum is σ = 29938561744. Its totient is φ = 27694068480.

The previous prime is 28806000299. The next prime is 28806000323. The reversal of 28806000313 is 31300060882.

28806000313 = 120012² + 120013².

It can be written as a sum of positive squares in 8 ways, for example, as 335512489 + 28470487824 = 18317^2 + 168732^2 .

It is a cyclic number.

It is not a de Polignac number, because 28806000313 - 2¹³ = 28805992121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28806000323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1037731 + ... + 1065127.

It is an arithmetic number, because the mean of its divisors is an integer number (1871160109).

Almost surely, 2^28806000313 is an apocalyptic number.

28806000313 is the 120013-rd centered square number.

It is an amenable number.

28806000313 is a deficient number, since it is larger than the sum of its proper divisors (1132561431).

28806000313 is a wasteful number, since it uses less digits than its factorization.

28806000313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27772.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 28806000313 in words is "twenty-eight billion, eight hundred six million, three hundred thirteen", and thus it is an aban number.