28784418029 has 2 divisors, whose sum is σ = 28784418030. Its totient is φ = 28784418028.

The previous prime is 28784418023. The next prime is 28784418101. The reversal of 28784418029 is 92081448782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26221324900 + 2563093129 = 161930^2 + 50627^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28784418029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28784418023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14392209014 + 14392209015.

It is an arithmetic number, because the mean of its divisors is an integer number (14392209015).

Almost surely, 2^28784418029 is an apocalyptic number.

It is an amenable number.

28784418029 is a deficient number, since it is larger than the sum of its proper divisors (1).

28784418029 is an equidigital number, since it uses as much as digits as its factorization.

28784418029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2064384, while the sum is 53.

The spelling of 28784418029 in words is "twenty-eight billion, seven hundred eighty-four million, four hundred eighteen thousand, twenty-nine".