28828549831 has 4 divisors (see below), whose sum is σ = 28835587000. Its totient is φ = 28821512664.

The previous prime is 28828549819. The next prime is 28828549861. The reversal of 28828549831 is 13894582882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13894582882 = 2 ⋅6947291441.

It is a cyclic number.

It is not a de Polignac number, because 28828549831 - 2¹⁵ = 28828517063 is a prime.

It is a super-2 number, since 2×28828549831² (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 (28828549861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3512436 + ... + 3520633.

It is an arithmetic number, because the mean of its divisors is an integer number (7208896750).

Almost surely, 2^28828549831 is an apocalyptic number.

28828549831 is a deficient number, since it is larger than the sum of its proper divisors (7037169).

28828549831 is an equidigital number, since it uses as much as digits as its factorization.

28828549831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7037168.

The product of its digits is 8847360, while the sum is 58.

The spelling of 28828549831 in words is "twenty-eight billion, eight hundred twenty-eight million, five hundred forty-nine thousand, eight hundred thirty-one".