28608003 has 6 divisors (see below), whose sum is σ = 41322684. Its totient is φ = 19071996.

The previous prime is 28607987. The next prime is 28608011. The reversal of 28608003 is 30080682.

It is not a de Polignac number, because 28608003 - 2⁴ = 28607987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28608023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1589325 + ... + 1589342.

It is an arithmetic number, because the mean of its divisors is an integer number (6887114).

Almost surely, 2^28608003 is an apocalyptic number.

28608003 is a deficient number, since it is larger than the sum of its proper divisors (12714681).

28608003 is a wasteful number, since it uses less digits than its factorization.

28608003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3178673 (or 3178670 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 28608003 is about 5348.6449685878. The cubic root of 28608003 is about 305.8411003793.

Adding to 28608003 its reverse (30080682), we get a palindrome (58688685).

The spelling of 28608003 in words is "twenty-eight million, six hundred eight thousand, three".