28645627 has 2 divisors, whose sum is σ = 28645628. Its totient is φ = 28645626.

The previous prime is 28645619. The next prime is 28645633. The reversal of 28645627 is 72654682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28645627 - 2³ = 28645619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28645627.

It is not a weakly prime, because it can be changed into another prime (28645667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14322813 + 14322814.

It is an arithmetic number, because the mean of its divisors is an integer number (14322814).

Almost surely, 2^28645627 is an apocalyptic number.

28645627 is a deficient number, since it is larger than the sum of its proper divisors (1).

28645627 is an equidigital number, since it uses as much as digits as its factorization.

28645627 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 40.

The square root of 28645627 is about 5352.1609654419. The cubic root of 28645627 is about 305.9751179449.

The spelling of 28645627 in words is "twenty-eight million, six hundred forty-five thousand, six hundred twenty-seven".