4028543 has 4 divisors (see below), whose sum is σ = 4158528. Its totient is φ = 3898560.

The previous prime is 4028539. The next prime is 4028561. The reversal of 4028543 is 3458204.

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

It is not a de Polignac number, because 4028543 - 2² = 4028539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4028533) 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, 64946 + ... + 65007.

It is an arithmetic number, because the mean of its divisors is an integer number (1039632).

Almost surely, 2^4028543 is an apocalyptic number.

4028543 is a deficient number, since it is larger than the sum of its proper divisors (129985).

4028543 is a wasteful number, since it uses less digits than its factorization.

4028543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129984.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 4028543 is about 2007.1230654845. The cubic root of 4028543 is about 159.1167872115.

The spelling of 4028543 in words is "four million, twenty-eight thousand, five hundred forty-three".