28924838729 has 2 divisors, whose sum is σ = 28924838730. Its totient is φ = 28924838728.

The previous prime is 28924838707. The next prime is 28924838753. The reversal of 28924838729 is 92783842982.

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., 24235328329 + 4689510400 = 155677^2 + 68480^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28924838729 is a prime.

It is not a weakly prime, because it can be changed into another prime (28924838429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14462419364 + 14462419365.

It is an arithmetic number, because the mean of its divisors is an integer number (14462419365).

Almost surely, 2^28924838729 is an apocalyptic number.

It is an amenable number.

28924838729 is a deficient number, since it is larger than the sum of its proper divisors (1).

28924838729 is an equidigital number, since it uses as much as digits as its factorization.

28924838729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27869184, while the sum is 62.

The spelling of 28924838729 in words is "twenty-eight billion, nine hundred twenty-four million, eight hundred thirty-eight thousand, seven hundred twenty-nine".