28766783 has 2 divisors, whose sum is σ = 28766784. Its totient is φ = 28766782.

The previous prime is 28766713. The next prime is 28766819. The reversal of 28766783 is 38766782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28766783 - 2¹² = 28762687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28766713) 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, 14383391 + 14383392.

It is an arithmetic number, because the mean of its divisors is an integer number (14383392).

Almost surely, 2^28766783 is an apocalyptic number.

28766783 is a deficient number, since it is larger than the sum of its proper divisors (1).

28766783 is an equidigital number, since it uses as much as digits as its factorization.

28766783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 47.

The square root of 28766783 is about 5363.4674418700. The cubic root of 28766783 is about 306.4058827129.

Subtracting 28766783 from its reverse (38766782), we obtain a palindrome (9999999).

The spelling of 28766783 in words is "twenty-eight million, seven hundred sixty-six thousand, seven hundred eighty-three".