28843018812 has 30 divisors (see below), whose sum is σ = 75401349408. Its totient is φ = 9614339496.

The previous prime is 28843018801. The next prime is 28843018817. The reversal of 28843018812 is 21881034882.

It is a happy number.

28843018812 is a `hidden beast` number, since 28 + 8 + 430 + 188 + 12 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28843018817) 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 9 ways as a sum of consecutive naturals, for example, 44510508 + ... + 44511155.

Almost surely, 2^28843018812 is an apocalyptic number.

It is an amenable number.

28843018812 is an abundant number, since it is smaller than the sum of its proper divisors (46558330596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28843018812 is a wasteful number, since it uses less digits than its factorization.

28843018812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89021679 (or 89021668 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 45.

The spelling of 28843018812 in words is "twenty-eight billion, eight hundred forty-three million, eighteen thousand, eight hundred twelve".