28168627 has 2 divisors, whose sum is σ = 28168628. Its totient is φ = 28168626.

The previous prime is 28168601. The next prime is 28168631. The reversal of 28168627 is 72686182.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28168627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28168627.

It is not a weakly prime, because it can be changed into another prime (28168687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14084313 + 14084314.

It is an arithmetic number, because the mean of its divisors is an integer number (14084314).

Almost surely, 2^28168627 is an apocalyptic number.

28168627 is a deficient number, since it is larger than the sum of its proper divisors (1).

28168627 is an equidigital number, since it uses as much as digits as its factorization.

28168627 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 40.

The square root of 28168627 is about 5307.4124580628. The cubic root of 28168627 is about 304.2672619377.

The spelling of 28168627 in words is "twenty-eight million, one hundred sixty-eight thousand, six hundred twenty-seven".