28534543 has 4 divisors (see below), whose sum is σ = 28726200. Its totient is φ = 28342888.

The previous prime is 28534507. The next prime is 28534549. The reversal of 28534543 is 34543582.

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 28534543 - 2²¹ = 26437391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28534499 and 28534508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28534549) 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, 95605 + ... + 95902.

It is an arithmetic number, because the mean of its divisors is an integer number (7181550).

Almost surely, 2^28534543 is an apocalyptic number.

28534543 is a deficient number, since it is larger than the sum of its proper divisors (191657).

28534543 is a wasteful number, since it uses less digits than its factorization.

28534543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191656.

The product of its digits is 57600, while the sum is 34.

The square root of 28534543 is about 5341.7733946696. The cubic root of 28534543 is about 305.5790950803.

It can be divided in two parts, 2853 and 4543, that added together give a square (7396 = 86²).

The spelling of 28534543 in words is "twenty-eight million, five hundred thirty-four thousand, five hundred forty-three".