28354673385 has 12 divisors (see below), whose sum is σ = 49148100612. Its totient is φ = 15122492448.

The previous prime is 28354673363. The next prime is 28354673407. The reversal of 28354673385 is 58337645382.

It is a happy number.

28354673385 is a `hidden beast` number, since 28 + 3 + 546 + 73 + 3 + 8 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (28354673363) and next prime (28354673407).

It can be written as a sum of positive squares in 2 ways, for example, as 18832621824 + 9522051561 = 137232^2 + 97581^2 .

It is not a de Polignac number, because 28354673385 - 2⁷ = 28354673257 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 315051882 + ... + 315051971.

It is an arithmetic number, because the mean of its divisors is an integer number (4095675051).

Almost surely, 2^28354673385 is an apocalyptic number.

It is an amenable number.

28354673385 is a deficient number, since it is larger than the sum of its proper divisors (20793427227).

28354673385 is a wasteful number, since it uses less digits than its factorization.

28354673385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630103864 (or 630103861 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 54.

The spelling of 28354673385 in words is "twenty-eight billion, three hundred fifty-four million, six hundred seventy-three thousand, three hundred eighty-five".