28765967 has 2 divisors, whose sum is σ = 28765968. Its totient is φ = 28765966.

The previous prime is 28765907. The next prime is 28765993. The reversal of 28765967 is 76956782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28765967 - 2⁶ = 28765903 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28765907) 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, 14382983 + 14382984.

It is an arithmetic number, because the mean of its divisors is an integer number (14382984).

Almost surely, 2^28765967 is an apocalyptic number.

28765967 is a deficient number, since it is larger than the sum of its proper divisors (1).

28765967 is an equidigital number, since it uses as much as digits as its factorization.

28765967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 50.

The square root of 28765967 is about 5363.3913711382. The cubic root of 28765967 is about 306.4029855106.

The spelling of 28765967 in words is "twenty-eight million, seven hundred sixty-five thousand, nine hundred sixty-seven".