28416626789 has 2 divisors, whose sum is σ = 28416626790. Its totient is φ = 28416626788.

The previous prime is 28416626773. The next prime is 28416626827. The reversal of 28416626789 is 98762661482.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25990276225 + 2426350564 = 161215^2 + 49258^2 .

It is a cyclic number.

It is not a de Polignac number, because 28416626789 - 2⁴ = 28416626773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28416626729) 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, 14208313394 + 14208313395.

It is an arithmetic number, because the mean of its divisors is an integer number (14208313395).

Almost surely, 2^28416626789 is an apocalyptic number.

It is an amenable number.

28416626789 is a deficient number, since it is larger than the sum of its proper divisors (1).

28416626789 is an equidigital number, since it uses as much as digits as its factorization.

28416626789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13934592, while the sum is 59.

The spelling of 28416626789 in words is "twenty-eight billion, four hundred sixteen million, six hundred twenty-six thousand, seven hundred eighty-nine".