28996787 has 2 divisors, whose sum is σ = 28996788. Its totient is φ = 28996786.

The previous prime is 28996783. The next prime is 28996819. The reversal of 28996787 is 78769982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28996787 - 2² = 28996783 is a prime.

It is not a weakly prime, because it can be changed into another prime (28996783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14498393 + 14498394.

It is an arithmetic number, because the mean of its divisors is an integer number (14498394).

Almost surely, 2^28996787 is an apocalyptic number.

28996787 is a deficient number, since it is larger than the sum of its proper divisors (1).

28996787 is an equidigital number, since it uses as much as digits as its factorization.

28996787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3048192, while the sum is 56.

The square root of 28996787 is about 5384.8664793103. The cubic root of 28996787 is about 307.2203357657.

The spelling of 28996787 in words is "twenty-eight million, nine hundred ninety-six thousand, seven hundred eighty-seven".