28027043 has 4 divisors (see below), whose sum is σ = 30574968. Its totient is φ = 25479120.

The previous prime is 28027039. The next prime is 28027063. The reversal of 28027043 is 34072082.

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 28027043 - 2² = 28027039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28027003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1273946 + ... + 1273967.

It is an arithmetic number, because the mean of its divisors is an integer number (7643742).

Almost surely, 2^28027043 is an apocalyptic number.

28027043 is a deficient number, since it is larger than the sum of its proper divisors (2547925).

28027043 is a wasteful number, since it uses less digits than its factorization.

28027043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2547924.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 28027043 is about 5294.0573287414. The cubic root of 28027043 is about 303.7566258215.

The spelling of 28027043 in words is "twenty-eight million, twenty-seven thousand, forty-three".