28300234818449 has 12 divisors (see below), whose sum is σ = 31190266159668. Its totient is φ = 25658511663840.

The previous prime is 28300234818347. The next prime is 28300234818487. The reversal of 28300234818449 is 94481843200382.

It can be written as a sum of positive squares in 2 ways, for example, as 16521233295424 + 11779001523025 = 4064632^2 + 3432055^2 .

It is not a de Polignac number, because 28300234818449 - 2²⁴ = 28300218041233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28300234818394 and 28300234818403.

It is not an unprimeable number, because it can be changed into a prime (28300234818649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 313475294 + ... + 313565559.

It is an arithmetic number, because the mean of its divisors is an integer number (2599188846639).

Almost surely, 2^{28300234818449} is an apocalyptic number.

It is an amenable number.

28300234818449 is a deficient number, since it is larger than the sum of its proper divisors (2890031341219).

28300234818449 is a wasteful number, since it uses less digits than its factorization.

28300234818449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627041248 (or 627041237 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 56.

The spelling of 28300234818449 in words is "twenty-eight trillion, three hundred billion, two hundred thirty-four million, eight hundred eighteen thousand, four hundred forty-nine".