28461582189 has 24 divisors (see below), whose sum is σ = 43541289792. Its totient is φ = 17853402240.

The previous prime is 28461582161. The next prime is 28461582203. The reversal of 28461582189 is 98128516482.

28461582189 is a `hidden beast` number, since 2 + 8 + 4 + 615 + 8 + 2 + 18 + 9 = 666.

It is not a de Polignac number, because 28461582189 - 2⁸ = 28461581933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28461582109) 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 23 ways as a sum of consecutive naturals, for example, 589224 + ... + 635694.

It is an arithmetic number, because the mean of its divisors is an integer number (1814220408).

Almost surely, 2^28461582189 is an apocalyptic number.

It is an amenable number.

28461582189 is a deficient number, since it is larger than the sum of its proper divisors (15079707603).

28461582189 is a wasteful number, since it uses less digits than its factorization.

28461582189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50497 (or 50494 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 54.

The spelling of 28461582189 in words is "twenty-eight billion, four hundred sixty-one million, five hundred eighty-two thousand, one hundred eighty-nine".