28609107 has 8 divisors (see below), whose sum is σ = 38198160. Its totient is φ = 19046400.

The previous prime is 28609093. The next prime is 28609111. The reversal of 28609107 is 70190682.

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

It is a de Polignac number, because none of the positive numbers 2^k-28609107 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28609127) 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, 3894 + ... + 8507.

It is an arithmetic number, because the mean of its divisors is an integer number (4774770).

Almost surely, 2^28609107 is an apocalyptic number.

28609107 is a deficient number, since it is larger than the sum of its proper divisors (9589053).

28609107 is a wasteful number, since it uses less digits than its factorization.

28609107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13173.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 28609107 is about 5348.7481713014. The cubic root of 28609107 is about 305.8450345259.

Adding to 28609107 its reverse (70190682), we get a palindrome (98799789).

The spelling of 28609107 in words is "twenty-eight million, six hundred nine thousand, one hundred seven".