28965543 has 8 divisors (see below), whose sum is σ = 38683008. Its totient is φ = 19279224.

The previous prime is 28965511. The next prime is 28965571. The reversal of 28965543 is 34556982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28965543 - 2⁵ = 28965511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28965495 and 28965504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28964543) 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 7 ways as a sum of consecutive naturals, for example, 5521 + ... + 9402.

It is an arithmetic number, because the mean of its divisors is an integer number (4835376).

Almost surely, 2^28965543 is an apocalyptic number.

28965543 is a deficient number, since it is larger than the sum of its proper divisors (9717465).

28965543 is a wasteful number, since it uses less digits than its factorization.

28965543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15573.

The product of its digits is 259200, while the sum is 42.

The square root of 28965543 is about 5381.9646041199. The cubic root of 28965543 is about 307.1099529406.

The spelling of 28965543 in words is "twenty-eight million, nine hundred sixty-five thousand, five hundred forty-three".