28867805108667 has 24 divisors (see below), whose sum is σ = 47655180508416. Its totient is φ = 16495753244976.

The previous prime is 28867805108621. The next prime is 28867805108677. The reversal of 28867805108667 is 76680150876882.

28867805108667 is a `hidden beast` number, since 28 + 8 + 6 + 7 + 8 + 0 + 510 + 86 + 6 + 7 = 666.

It is not a de Polignac number, because 28867805108667 - 2³² = 28863510141371 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28867805108595 and 28867805108604.

It is not an unprimeable number, because it can be changed into a prime (28867805108677) 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 23 ways as a sum of consecutive naturals, for example, 6124858 + ... + 9759584.

It is an arithmetic number, because the mean of its divisors is an integer number (1985632521184).

Almost surely, 2^{28867805108667} is an apocalyptic number.

28867805108667 is a deficient number, since it is larger than the sum of its proper divisors (18787375399749).

28867805108667 is a wasteful number, since it uses less digits than its factorization.

28867805108667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3760807 (or 3760804 counting only the distinct ones).

The product of its (nonzero) digits is 433520640, while the sum is 72.

The spelling of 28867805108667 in words is "twenty-eight trillion, eight hundred sixty-seven billion, eight hundred five million, one hundred eight thousand, six hundred sixty-seven".