28647603667 has 8 divisors (see below), whose sum is σ = 29158816752. Its totient is φ = 28137732000.

The previous prime is 28647603637. The next prime is 28647603689. The reversal of 28647603667 is 76630674682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28647603667 - 2¹⁵ = 28647570899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28647603637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292213 + ... + 377734.

It is an arithmetic number, because the mean of its divisors is an integer number (3644852094).

Almost surely, 2^28647603667 is an apocalyptic number.

28647603667 is a deficient number, since it is larger than the sum of its proper divisors (511213085).

28647603667 is an equidigital number, since it uses as much as digits as its factorization.

28647603667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670709.

The product of its (nonzero) digits is 12192768, while the sum is 55.

The spelling of 28647603667 in words is "twenty-eight billion, six hundred forty-seven million, six hundred three thousand, six hundred sixty-seven".