28608117 has 8 divisors (see below), whose sum is σ = 38176224. Its totient is φ = 19056048.

The previous prime is 28608109. The next prime is 28608121. The reversal of 28608117 is 71180682.

It is a happy number.

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

It is not a de Polignac number, because 28608117 - 2³ = 28608109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28608137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1078 + ... + 7640.

It is an arithmetic number, because the mean of its divisors is an integer number (4772028).

Almost surely, 2^28608117 is an apocalyptic number.

It is an amenable number.

28608117 is a deficient number, since it is larger than the sum of its proper divisors (9568107).

28608117 is a wasteful number, since it uses less digits than its factorization.

28608117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8019.

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 28608117 is about 5348.6556254820. The cubic root of 28608117 is about 305.8415066274.

Adding to 28608117 its reverse (71180682), we get a palindrome (99788799).

The spelling of 28608117 in words is "twenty-eight million, six hundred eight thousand, one hundred seventeen".