28883587 has 2 divisors, whose sum is σ = 28883588. Its totient is φ = 28883586.

The previous prime is 28883563. The next prime is 28883597. The reversal of 28883587 is 78538882.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28883587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28883587.

It is not a weakly prime, because it can be changed into another prime (28883597) 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, 14441793 + 14441794.

It is an arithmetic number, because the mean of its divisors is an integer number (14441794).

Almost surely, 2^28883587 is an apocalyptic number.

28883587 is a deficient number, since it is larger than the sum of its proper divisors (1).

28883587 is an equidigital number, since it uses as much as digits as its factorization.

28883587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 860160, while the sum is 49.

The square root of 28883587 is about 5374.3452624483. The cubic root of 28883587 is about 306.8200305416.

The spelling of 28883587 in words is "twenty-eight million, eight hundred eighty-three thousand, five hundred eighty-seven".