28806191132 has 12 divisors (see below), whose sum is σ = 52036990656. Its totient is φ = 13938479520.

The previous prime is 28806191083. The next prime is 28806191191. The reversal of 28806191132 is 23119160882.

It is a self number, because there is not a number n which added to its sum of digits gives 28806191132.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 116153873 + ... + 116154120.

It is an arithmetic number, because the mean of its divisors is an integer number (4336415888).

Almost surely, 2^28806191132 is an apocalyptic number.

It is an amenable number.

28806191132 is a deficient number, since it is larger than the sum of its proper divisors (23230799524).

28806191132 is a wasteful number, since it uses less digits than its factorization.

28806191132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232308028 (or 232308026 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 41.

The spelling of 28806191132 in words is "twenty-eight billion, eight hundred six million, one hundred ninety-one thousand, one hundred thirty-two".