28063517 has 2 divisors, whose sum is σ = 28063518. Its totient is φ = 28063516.

The previous prime is 28063499. The next prime is 28063523. The reversal of 28063517 is 71536082.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22080601 + 5982916 = 4699^2 + 2446^2 .

It is a cyclic number.

It is not a de Polignac number, because 28063517 - 2¹⁸ = 27801373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28063537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14031758 + 14031759.

It is an arithmetic number, because the mean of its divisors is an integer number (14031759).

Almost surely, 2^28063517 is an apocalyptic number.

It is an amenable number.

28063517 is a deficient number, since it is larger than the sum of its proper divisors (1).

28063517 is an equidigital number, since it uses as much as digits as its factorization.

28063517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 28063517 is about 5297.5010146294. The cubic root of 28063517 is about 303.8883369041. Note that the first 3 decimals are identical.

Adding to 28063517 its reverse (71536082), we get a palindrome (99599599).

The spelling of 28063517 in words is "twenty-eight million, sixty-three thousand, five hundred seventeen".