28849833831 has 48 divisors (see below), whose sum is σ = 49743310848. Its totient is φ = 14726577600.

The previous prime is 28849833791. The next prime is 28849833863. The reversal of 28849833831 is 13833894882.

It is not a de Polignac number, because 28849833831 - 2¹⁷ = 28849702759 is a prime.

It is a super-2 number, since 2×28849833831² (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 (28849833031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 184255 + ... + 302736.

It is an arithmetic number, because the mean of its divisors is an integer number (1036318976).

Almost surely, 2^28849833831 is an apocalyptic number.

28849833831 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28849833831 is a deficient number, since it is larger than the sum of its proper divisors (20893477017).

28849833831 is a wasteful number, since it uses less digits than its factorization.

28849833831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487052 (or 487045 counting only the distinct ones).

The product of its digits is 7962624, while the sum is 57.

The spelling of 28849833831 in words is "twenty-eight billion, eight hundred forty-nine million, eight hundred thirty-three thousand, eight hundred thirty-one".