28343117 has 8 divisors (see below), whose sum is σ = 32547360. Its totient is φ = 24410160.

The previous prime is 28343113. The next prime is 28343137. The reversal of 28343117 is 71134382.

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 28343117 - 2² = 28343113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28343117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28343111) 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, 67598 + ... + 68015.

It is an arithmetic number, because the mean of its divisors is an integer number (4068420).

Almost surely, 2^28343117 is an apocalyptic number.

It is an amenable number.

28343117 is a deficient number, since it is larger than the sum of its proper divisors (4204243).

28343117 is a wasteful number, since it uses less digits than its factorization.

28343117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135643.

The product of its digits is 4032, while the sum is 29.

The square root of 28343117 is about 5323.8254103605. The cubic root of 28343117 is about 304.8942283059.

Adding to 28343117 its reverse (71134382), we get a palindrome (99477499).

The spelling of 28343117 in words is "twenty-eight million, three hundred forty-three thousand, one hundred seventeen".