28315838241 has 12 divisors (see below), whose sum is σ = 41898232740. Its totient is φ = 18416805120.

The previous prime is 28315838227. The next prime is 28315838251. The reversal of 28315838241 is 14283851382.

28315838241 is a `hidden beast` number, since 2 + 83 + 158 + 382 + 41 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 553613841 + 27762224400 = 23529^2 + 166620^2 .

It is not a de Polignac number, because 28315838241 - 2¹⁵ = 28315805473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28315838251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38367976 + ... + 38368713.

It is an arithmetic number, because the mean of its divisors is an integer number (3491519395).

Almost surely, 2^28315838241 is an apocalyptic number.

It is an amenable number.

28315838241 is a deficient number, since it is larger than the sum of its proper divisors (13582394499).

28315838241 is a wasteful number, since it uses less digits than its factorization.

28315838241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76736736 (or 76736733 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The spelling of 28315838241 in words is "twenty-eight billion, three hundred fifteen million, eight hundred thirty-eight thousand, two hundred forty-one".