28322504831 has 4 divisors (see below), whose sum is σ = 29813163000. Its totient is φ = 26831846664.

The previous prime is 28322504783. The next prime is 28322504839. The reversal of 28322504831 is 13840522382.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13840522382 = 2 ⋅6920261191.

It is not a de Polignac number, because 28322504831 - 2³⁰ = 27248763007 is a prime.

It is a super-2 number, since 2×28322504831² (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 (28322504839) 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, 745329056 + ... + 745329093.

It is an arithmetic number, because the mean of its divisors is an integer number (7453290750).

Almost surely, 2^28322504831 is an apocalyptic number.

28322504831 is a deficient number, since it is larger than the sum of its proper divisors (1490658169).

28322504831 is a wasteful number, since it uses less digits than its factorization.

28322504831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490658168.

The product of its (nonzero) digits is 92160, while the sum is 38.

The spelling of 28322504831 in words is "twenty-eight billion, three hundred twenty-two million, five hundred four thousand, eight hundred thirty-one".