28663007 has 2 divisors, whose sum is σ = 28663008. Its totient is φ = 28663006.

The previous prime is 28662989. The next prime is 28663027. The reversal of 28663007 is 70036682.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28663007 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 (28663027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14331503 + 14331504.

It is an arithmetic number, because the mean of its divisors is an integer number (14331504).

Almost surely, 2^28663007 is an apocalyptic number.

28663007 is a deficient number, since it is larger than the sum of its proper divisors (1).

28663007 is an equidigital number, since it uses as much as digits as its factorization.

28663007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 28663007 is about 5353.7843624860. The cubic root of 28663007 is about 306.0369862878.

Adding to 28663007 its reverse (70036682), we get a palindrome (98699689).

The spelling of 28663007 in words is "twenty-eight million, six hundred sixty-three thousand, seven".