28942663 has 2 divisors, whose sum is σ = 28942664. Its totient is φ = 28942662.

The previous prime is 28942637. The next prime is 28942699. The reversal of 28942663 is 36624982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28942663 - 2⁵ = 28942631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28942633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14471331 + 14471332.

It is an arithmetic number, because the mean of its divisors is an integer number (14471332).

Almost surely, 2^28942663 is an apocalyptic number.

28942663 is a deficient number, since it is larger than the sum of its proper divisors (1).

28942663 is an equidigital number, since it uses as much as digits as its factorization.

28942663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 40.

The square root of 28942663 is about 5379.8385663512. The cubic root of 28942663 is about 307.0290691739.

The spelling of 28942663 in words is "twenty-eight million, nine hundred forty-two thousand, six hundred sixty-three".