28630783 has 2 divisors, whose sum is σ = 28630784. Its totient is φ = 28630782.

The previous prime is 28630769. The next prime is 28630793. The reversal of 28630783 is 38703682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28630783 - 2⁹ = 28630271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28630793) 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, 14315391 + 14315392.

It is an arithmetic number, because the mean of its divisors is an integer number (14315392).

Almost surely, 2^28630783 is an apocalyptic number.

28630783 is a deficient number, since it is larger than the sum of its proper divisors (1).

28630783 is an equidigital number, since it uses as much as digits as its factorization.

28630783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 28630783 is about 5350.7740561530. The cubic root of 28630783 is about 305.9222572947.

The spelling of 28630783 in words is "twenty-eight million, six hundred thirty thousand, seven hundred eighty-three".