28022503 has 2 divisors, whose sum is σ = 28022504. Its totient is φ = 28022502.

The previous prime is 28022447. The next prime is 28022521. The reversal of 28022503 is 30522082.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28022503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28022563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14011251 + 14011252.

It is an arithmetic number, because the mean of its divisors is an integer number (14011252).

Almost surely, 2^28022503 is an apocalyptic number.

28022503 is a deficient number, since it is larger than the sum of its proper divisors (1).

28022503 is an equidigital number, since it uses as much as digits as its factorization.

28022503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 28022503 is about 5293.6285287126. The cubic root of 28022503 is about 303.7402234543.

Adding to 28022503 its reverse (30522082), we get a palindrome (58544585).

The spelling of 28022503 in words is "twenty-eight million, twenty-two thousand, five hundred three".