28224843 has 8 divisors (see below), whose sum is σ = 38163456. Its totient is φ = 18551400.

The previous prime is 28224827. The next prime is 28224853. The reversal of 28224843 is 34842282.

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

It is not a de Polignac number, because 28224843 - 2⁴ = 28224827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28224853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66043 + ... + 66468.

It is an arithmetic number, because the mean of its divisors is an integer number (4770432).

Almost surely, 2^28224843 is an apocalyptic number.

28224843 is a deficient number, since it is larger than the sum of its proper divisors (9938613).

28224843 is a wasteful number, since it uses less digits than its factorization.

28224843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132585.

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

The square root of 28224843 is about 5312.7058077782. The cubic root of 28224843 is about 304.4695356992.

The spelling of 28224843 in words is "twenty-eight million, two hundred twenty-four thousand, eight hundred forty-three".