28008803 has 2 divisors, whose sum is σ = 28008804. Its totient is φ = 28008802.

The previous prime is 28008797. The next prime is 28008811. The reversal of 28008803 is 30880082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28008803 - 2¹² = 28004707 is a prime.

It is not a weakly prime, because it can be changed into another prime (28008823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14004401 + 14004402.

It is an arithmetic number, because the mean of its divisors is an integer number (14004402).

Almost surely, 2^28008803 is an apocalyptic number.

28008803 is a deficient number, since it is larger than the sum of its proper divisors (1).

28008803 is an equidigital number, since it uses as much as digits as its factorization.

28008803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 28008803 is about 5292.3343620750. The cubic root of 28008803 is about 303.6907165826.

Adding to 28008803 its reverse (30880082), we get a palindrome (58888885).

The spelling of 28008803 in words is "twenty-eight million, eight thousand, eight hundred three".