28452543 has 16 divisors (see below), whose sum is σ = 45907200. Its totient is φ = 15302016.

The previous prime is 28452539. The next prime is 28452547. The reversal of 28452543 is 34525482.

It is an interprime number because it is at equal distance from previous prime (28452539) and next prime (28452547).

It is not a de Polignac number, because 28452543 - 2² = 28452539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28452547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39493 + ... + 40206.

It is an arithmetic number, because the mean of its divisors is an integer number (2869200).

Almost surely, 2^28452543 is an apocalyptic number.

28452543 is a deficient number, since it is larger than the sum of its proper divisors (17454657).

28452543 is a wasteful number, since it uses less digits than its factorization.

28452543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79726.

The product of its digits is 38400, while the sum is 33.

The square root of 28452543 is about 5334.0925188827. The cubic root of 28452543 is about 305.2860990107.

The spelling of 28452543 in words is "twenty-eight million, four hundred fifty-two thousand, five hundred forty-three".