28885663 has 2 divisors, whose sum is σ = 28885664. Its totient is φ = 28885662.

The previous prime is 28885657. The next prime is 28885667. The reversal of 28885663 is 36658882.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28885663 - 2²¹ = 26788511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28885667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14442831 + 14442832.

It is an arithmetic number, because the mean of its divisors is an integer number (14442832).

Almost surely, 2^28885663 is an apocalyptic number.

28885663 is a deficient number, since it is larger than the sum of its proper divisors (1).

28885663 is an equidigital number, since it uses as much as digits as its factorization.

28885663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 552960, while the sum is 46.

The square root of 28885663 is about 5374.5383987837. The cubic root of 28885663 is about 306.8273812344.

The spelling of 28885663 in words is "twenty-eight million, eight hundred eighty-five thousand, six hundred sixty-three".