28227503 has 2 divisors, whose sum is σ = 28227504. Its totient is φ = 28227502.

The previous prime is 28227499. The next prime is 28227523. The reversal of 28227503 is 30572282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28227503 - 2² = 28227499 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28227523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14113751 + 14113752.

It is an arithmetic number, because the mean of its divisors is an integer number (14113752).

Almost surely, 2^28227503 is an apocalyptic number.

28227503 is a deficient number, since it is larger than the sum of its proper divisors (1).

28227503 is an equidigital number, since it uses as much as digits as its factorization.

28227503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 28227503 is about 5312.9561451230. The cubic root of 28227503 is about 304.4791001282.

Adding to 28227503 its reverse (30572282), we get a palindrome (58799785).

The spelling of 28227503 in words is "twenty-eight million, two hundred twenty-seven thousand, five hundred three".