28141843 has 4 divisors (see below), whose sum is σ = 28299240. Its totient is φ = 27984448.

The previous prime is 28141819. The next prime is 28141853. The reversal of 28141843 is 34814182.

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 28141843 - 2⁹ = 28141331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28141853) 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, 78430 + ... + 78787.

It is an arithmetic number, because the mean of its divisors is an integer number (7074810).

Almost surely, 2^28141843 is an apocalyptic number.

28141843 is a deficient number, since it is larger than the sum of its proper divisors (157397).

28141843 is a wasteful number, since it uses less digits than its factorization.

28141843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157396.

The product of its digits is 6144, while the sum is 31.

The square root of 28141843 is about 5304.8885944947. Note that the first 3 decimals coincide. The cubic root of 28141843 is about 304.1707943478.

It can be divided in two parts, 281 and 41843, that added together give a palindrome (42124).

The spelling of 28141843 in words is "twenty-eight million, one hundred forty-one thousand, eight hundred forty-three".