28033886985 has 64 divisors (see below), whose sum is σ = 49939169280. Its totient is φ = 13335632640.

The previous prime is 28033886983. The next prime is 28033886987. The reversal of 28033886985 is 58968833082.

It is an interprime number because it is at equal distance from previous prime (28033886983) and next prime (28033886987).

It is not a de Polignac number, because 28033886985 - 2¹ = 28033886983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28033886983) 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 63 ways as a sum of consecutive naturals, for example, 4391526 + ... + 4397904.

It is an arithmetic number, because the mean of its divisors is an integer number (780299520).

Almost surely, 2^28033886985 is an apocalyptic number.

It is an amenable number.

28033886985 is a deficient number, since it is larger than the sum of its proper divisors (21905282295).

28033886985 is a wasteful number, since it uses less digits than its factorization.

28033886985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7158.

The product of its (nonzero) digits is 19906560, while the sum is 60.

The spelling of 28033886985 in words is "twenty-eight billion, thirty-three million, eight hundred eighty-six thousand, nine hundred eighty-five".