28881067 has 2 divisors, whose sum is σ = 28881068. Its totient is φ = 28881066.

The previous prime is 28881059. The next prime is 28881089. The reversal of 28881067 is 76018882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28881067 - 2³ = 28881059 is a prime.

It is not a weakly prime, because it can be changed into another prime (28881037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14440533 + 14440534.

It is an arithmetic number, because the mean of its divisors is an integer number (14440534).

Almost surely, 2^28881067 is an apocalyptic number.

28881067 is a deficient number, since it is larger than the sum of its proper divisors (1).

28881067 is an equidigital number, since it uses as much as digits as its factorization.

28881067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 28881067 is about 5374.1108101713. The cubic root of 28881067 is about 306.8111072621.

The spelling of 28881067 in words is "twenty-eight million, eight hundred eighty-one thousand, sixty-seven".