28542203 has 2 divisors, whose sum is σ = 28542204. Its totient is φ = 28542202.

The previous prime is 28542193. The next prime is 28542209. The reversal of 28542203 is 30224582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28542203 - 2⁶ = 28542139 is a prime.

It is equal to p_1773062 and since 28542203 and 1773062 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (28542209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14271101 + 14271102.

It is an arithmetic number, because the mean of its divisors is an integer number (14271102).

Almost surely, 2^28542203 is an apocalyptic number.

28542203 is a deficient number, since it is larger than the sum of its proper divisors (1).

28542203 is an equidigital number, since it uses as much as digits as its factorization.

28542203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 28542203 is about 5342.4903369122. The cubic root of 28542203 is about 305.6064365198.

Adding to 28542203 its reverse (30224582), we get a palindrome (58766785).

The spelling of 28542203 in words is "twenty-eight million, five hundred forty-two thousand, two hundred three".