28768967 has 2 divisors, whose sum is σ = 28768968. Its totient is φ = 28768966.

The previous prime is 28768963. The next prime is 28768979. The reversal of 28768967 is 76986782.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28768967 - 2² = 28768963 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28768963) 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, 14384483 + 14384484.

It is an arithmetic number, because the mean of its divisors is an integer number (14384484).

Almost surely, 2^28768967 is an apocalyptic number.

28768967 is a deficient number, since it is larger than the sum of its proper divisors (1).

28768967 is an equidigital number, since it uses as much as digits as its factorization.

28768967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 53.

The square root of 28768967 is about 5363.6710376383. The cubic root of 28768967 is about 306.4136367199.

The spelling of 28768967 in words is "twenty-eight million, seven hundred sixty-eight thousand, nine hundred sixty-seven".