28603 has 2 divisors, whose sum is σ = 28604. Its totient is φ = 28602.

The previous prime is 28597. The next prime is 28607. The reversal of 28603 is 30682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28603 - 2⁵ = 28571 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 8³ + 6³ + 0 + 3⁹ .

It is a plaindrome in base 12.

It is a nialpdrome in base 9.

It is not a weakly prime, because it can be changed into another prime (28607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14301 + 14302.

It is an arithmetic number, because the mean of its divisors is an integer number (14302).

2²⁸⁶⁰³ is an apocalyptic number.

28603 is a deficient number, since it is larger than the sum of its proper divisors (1).

28603 is an equidigital number, since it uses as much as digits as its factorization.

28603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 28603 is about 169.1242147062. The cubic root of 28603 is about 30.5823270727.

The spelling of 28603 in words is "twenty-eight thousand, six hundred three".