28242843 has 8 divisors (see below), whose sum is σ = 37779456. Its totient is φ = 18767400.

The previous prime is 28242791. The next prime is 28242859. The reversal of 28242843 is 34824282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28242843 - 2⁶ = 28242779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28242343) 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 7 ways as a sum of consecutive naturals, for example, 14203 + ... + 16068.

It is an arithmetic number, because the mean of its divisors is an integer number (4722432).

Almost surely, 2^28242843 is an apocalyptic number.

28242843 is a deficient number, since it is larger than the sum of its proper divisors (9536613).

28242843 is a wasteful number, since it uses less digits than its factorization.

28242843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30585.

The product of its digits is 24576, while the sum is 33.

The square root of 28242843 is about 5314.3995897938. The cubic root of 28242843 is about 304.5342456786.

The spelling of 28242843 in words is "twenty-eight million, two hundred forty-two thousand, eight hundred forty-three".