28647067 has 4 divisors (see below), whose sum is σ = 28699056. Its totient is φ = 28595080.

The previous prime is 28647043. The next prime is 28647071. The reversal of 28647067 is 76074682.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28647067 is a prime.

It is a cake number, because a cake can be divided into 28647067 parts by 556 planar cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28647077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25159 + ... + 26272.

It is an arithmetic number, because the mean of its divisors is an integer number (7174764).

Almost surely, 2^28647067 is an apocalyptic number.

28647067 is a deficient number, since it is larger than the sum of its proper divisors (51989).

28647067 is an equidigital number, since it uses as much as digits as its factorization.

28647067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51988.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 28647067 is about 5352.2954888534. The cubic root of 28647067 is about 305.9802449263.

The spelling of 28647067 in words is "twenty-eight million, six hundred forty-seven thousand, sixty-seven".