28235663 has 2 divisors, whose sum is σ = 28235664. Its totient is φ = 28235662.

The previous prime is 28235659. The next prime is 28235671. The reversal of 28235663 is 36653282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28235663 - 2² = 28235659 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28235693) 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, 14117831 + 14117832.

It is an arithmetic number, because the mean of its divisors is an integer number (14117832).

Almost surely, 2^28235663 is an apocalyptic number.

28235663 is a deficient number, since it is larger than the sum of its proper divisors (1).

28235663 is an equidigital number, since it uses as much as digits as its factorization.

28235663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 35.

The square root of 28235663 is about 5313.7240236956. The cubic root of 28235663 is about 304.5084368840.

The spelling of 28235663 in words is "twenty-eight million, two hundred thirty-five thousand, six hundred sixty-three".