28344667 has 8 divisors (see below), whose sum is σ = 30603440. Its totient is φ = 26097120.

The previous prime is 28344649. The next prime is 28344689. The reversal of 28344667 is 76644382.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28344667 - 2¹¹ = 28342619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28342667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2884 + ... + 8062.

It is an arithmetic number, because the mean of its divisors is an integer number (3825430).

Almost surely, 2^28344667 is an apocalyptic number.

28344667 is a deficient number, since it is larger than the sum of its proper divisors (2258773).

28344667 is a wasteful number, since it uses less digits than its factorization.

28344667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5613.

The product of its digits is 193536, while the sum is 40.

The square root of 28344667 is about 5323.9709803867. The cubic root of 28344667 is about 304.8997861214.

The spelling of 28344667 in words is "twenty-eight million, three hundred forty-four thousand, six hundred sixty-seven".