28750663 has 2 divisors, whose sum is σ = 28750664. Its totient is φ = 28750662.

The previous prime is 28750651. The next prime is 28750679. The reversal of 28750663 is 36605782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28750663 - 2¹³ = 28742471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28750633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14375331 + 14375332.

It is an arithmetic number, because the mean of its divisors is an integer number (14375332).

Almost surely, 2^28750663 is an apocalyptic number.

28750663 is a deficient number, since it is larger than the sum of its proper divisors (1).

28750663 is an equidigital number, since it uses as much as digits as its factorization.

28750663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 28750663 is about 5361.9644720942. The cubic root of 28750663 is about 306.3486386139.

The spelling of 28750663 in words is "twenty-eight million, seven hundred fifty thousand, six hundred sixty-three".