28329858787 has 2 divisors, whose sum is σ = 28329858788. Its totient is φ = 28329858786.

The previous prime is 28329858719. The next prime is 28329858829. The reversal of 28329858787 is 78785892382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28329858787 - 2⁷ = 28329858659 is a prime.

It is a super-2 number, since 2×28329858787² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28329858187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14164929393 + 14164929394.

It is an arithmetic number, because the mean of its divisors is an integer number (14164929394).

Almost surely, 2^28329858787 is an apocalyptic number.

28329858787 is a deficient number, since it is larger than the sum of its proper divisors (1).

28329858787 is an equidigital number, since it uses as much as digits as its factorization.

28329858787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108380160, while the sum is 67.

The spelling of 28329858787 in words is "twenty-eight billion, three hundred twenty-nine million, eight hundred fifty-eight thousand, seven hundred eighty-seven".