28148112829 has 4 divisors (see below), whose sum is σ = 28568233984. Its totient is φ = 27727991676.

The previous prime is 28148112827. The next prime is 28148112947. The reversal of 28148112829 is 92821184182.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28148112829 - 2¹ = 28148112827 is a prime.

It is a super-2 number, since 2×28148112829² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28148112827) 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 in 3 ways as a sum of consecutive naturals, for example, 210060477 + ... + 210060610.

It is an arithmetic number, because the mean of its divisors is an integer number (7142058496).

Almost surely, 2^28148112829 is an apocalyptic number.

It is an amenable number.

28148112829 is a deficient number, since it is larger than the sum of its proper divisors (420121155).

28148112829 is an equidigital number, since it uses as much as digits as its factorization.

28148112829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420121154.

The product of its digits is 147456, while the sum is 46.

The spelling of 28148112829 in words is "twenty-eight billion, one hundred forty-eight million, one hundred twelve thousand, eight hundred twenty-nine".