28334109 has 8 divisors (see below), whose sum is σ = 37809472. Its totient is φ = 18874080.

The previous prime is 28334107. The next prime is 28334143. The reversal of 28334109 is 90143382.

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

It is not a de Polignac number, because 28334109 - 2¹ = 28334107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28334107) 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, 1569 + ... + 7689.

It is an arithmetic number, because the mean of its divisors is an integer number (4726184).

Almost surely, 2^28334109 is an apocalyptic number.

It is an amenable number.

28334109 is a deficient number, since it is larger than the sum of its proper divisors (9475363).

28334109 is a wasteful number, since it uses less digits than its factorization.

28334109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7667.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 28334109 is about 5322.9793349214. The cubic root of 28334109 is about 304.8619244228.

The spelling of 28334109 in words is "twenty-eight million, three hundred thirty-four thousand, one hundred nine".