28329858823 has 6 divisors (see below), whose sum is σ = 32377490456. Its totient is φ = 24282354432.

The previous prime is 28329858787. The next prime is 28329858829. The reversal of 28329858823 is 32885892382.

It is a happy number.

It is not a de Polignac number, because 28329858823 - 2¹³ = 28329850631 is a prime.

It is a super-2 number, since 2×28329858823² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28329858829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 413511 + ... + 477127.

Almost surely, 2^28329858823 is an apocalyptic number.

28329858823 is a deficient number, since it is larger than the sum of its proper divisors (4047631633).

28329858823 is an frugal number, since it uses more digits than its factorization.

28329858823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127241 (or 63624 counting only the distinct ones).

The product of its digits is 13271040, while the sum is 58.

The spelling of 28329858823 in words is "twenty-eight billion, three hundred twenty-nine million, eight hundred fifty-eight thousand, eight hundred twenty-three".