28703663 has 2 divisors, whose sum is σ = 28703664. Its totient is φ = 28703662.

The previous prime is 28703659. The next prime is 28703669. The reversal of 28703663 is 36630782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28703663 - 2² = 28703659 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28703669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14351831 + 14351832.

It is an arithmetic number, because the mean of its divisors is an integer number (14351832).

Almost surely, 2^28703663 is an apocalyptic number.

28703663 is a deficient number, since it is larger than the sum of its proper divisors (1).

28703663 is an equidigital number, since it uses as much as digits as its factorization.

28703663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 28703663 is about 5357.5799574061. The cubic root of 28703663 is about 306.1816136071.

The spelling of 28703663 in words is "twenty-eight million, seven hundred three thousand, six hundred sixty-three".