28052303 has 16 divisors (see below), whose sum is σ = 30858240. Its totient is φ = 25401600.

The previous prime is 28052291. The next prime is 28052333. The reversal of 28052303 is 30325082.

It is a cyclic number.

It is not a de Polignac number, because 28052303 - 2⁸ = 28052047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28052333) 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 in 15 ways as a sum of consecutive naturals, for example, 56888 + ... + 57378.

It is an arithmetic number, because the mean of its divisors is an integer number (1928640).

Almost surely, 2^28052303 is an apocalyptic number.

28052303 is a deficient number, since it is larger than the sum of its proper divisors (2805937).

28052303 is a wasteful number, since it uses less digits than its factorization.

28052303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 28052303 is about 5296.4424852914. The cubic root of 28052303 is about 303.8478542397.

Adding to 28052303 its reverse (30325082), we get a palindrome (58377385).

The spelling of 28052303 in words is "twenty-eight million, fifty-two thousand, three hundred three".