28628603 has 2 divisors, whose sum is σ = 28628604. Its totient is φ = 28628602.

The previous prime is 28628591. The next prime is 28628623. The reversal of 28628603 is 30682682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28628603 - 2²⁰ = 27580027 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28628623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14314301 + 14314302.

It is an arithmetic number, because the mean of its divisors is an integer number (14314302).

Almost surely, 2^28628603 is an apocalyptic number.

28628603 is a deficient number, since it is larger than the sum of its proper divisors (1).

28628603 is an equidigital number, since it uses as much as digits as its factorization.

28628603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 28628603 is about 5350.5703434307. The cubic root of 28628603 is about 305.9144926049.

The spelling of 28628603 in words is "twenty-eight million, six hundred twenty-eight thousand, six hundred three".