28063613 has 2 divisors, whose sum is σ = 28063614. Its totient is φ = 28063612.

The previous prime is 28063601. The next prime is 28063643. The reversal of 28063613 is 31636082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27489049 + 574564 = 5243^2 + 758^2 .

It is a cyclic number.

It is not a de Polignac number, because 28063613 - 2⁴ = 28063597 is a prime.

It is a super-2 number, since 2×28063613² = 1575132749227538, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28063643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14031806 + 14031807.

It is an arithmetic number, because the mean of its divisors is an integer number (14031807).

Almost surely, 2^28063613 is an apocalyptic number.

It is an amenable number.

28063613 is a deficient number, since it is larger than the sum of its proper divisors (1).

28063613 is an equidigital number, since it uses as much as digits as its factorization.

28063613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 28063613 is about 5297.5100754977. The cubic root of 28063613 is about 303.8886834186. Note that the first 3 decimals are identical.

Adding to 28063613 its reverse (31636082), we get a palindrome (59699695).

The spelling of 28063613 in words is "twenty-eight million, sixty-three thousand, six hundred thirteen".