23028543 has 40 divisors (see below), whose sum is σ = 36799488. Its totient is φ = 14317776.

The previous prime is 23028527. The next prime is 23028569. The reversal of 23028543 is 34582032.

It is not a de Polignac number, because 23028543 - 2⁴ = 23028527 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23028583) 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 39 ways as a sum of consecutive naturals, for example, 87430 + ... + 87692.

Almost surely, 2^23028543 is an apocalyptic number.

23028543 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

23028543 is a deficient number, since it is larger than the sum of its proper divisors (13770945).

23028543 is a wasteful number, since it uses less digits than its factorization.

23028543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 23028543 is about 4798.8064140992. The cubic root of 23028543 is about 284.5042906518.

The spelling of 23028543 in words is "twenty-three million, twenty-eight thousand, five hundred forty-three".