28516932323 has 4 divisors (see below), whose sum is σ = 31109380728. Its totient is φ = 25924483920.

The previous prime is 28516932317. The next prime is 28516932349. The reversal of 28516932323 is 32323961582.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28516932323 - 2²² = 28512738019 is a prime.

It is a super-2 number, since 2×28516932323² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28516932313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1296224186 + ... + 1296224207.

It is an arithmetic number, because the mean of its divisors is an integer number (7777345182).

Almost surely, 2^28516932323 is an apocalyptic number.

28516932323 is a deficient number, since it is larger than the sum of its proper divisors (2592448405).

28516932323 is a wasteful number, since it uses less digits than its factorization.

28516932323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2592448404.

The product of its digits is 466560, while the sum is 44.

The spelling of 28516932323 in words is "twenty-eight billion, five hundred sixteen million, nine hundred thirty-two thousand, three hundred twenty-three".