28147973206 has 16 divisors (see below), whose sum is σ = 46376524800. Its totient is φ = 12753543528.

The previous prime is 28147973197. The next prime is 28147973207. The reversal of 28147973206 is 60237974182.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28147973206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28147973207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16102086 + ... + 16103833.

It is an arithmetic number, because the mean of its divisors is an integer number (2898532800).

Almost surely, 2^28147973206 is an apocalyptic number.

28147973206 is a deficient number, since it is larger than the sum of its proper divisors (18228551594).

28147973206 is a wasteful number, since it uses less digits than its factorization.

28147973206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32205963.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 28147973206 in words is "twenty-eight billion, one hundred forty-seven million, nine hundred seventy-three thousand, two hundred six".