28806113 has 8 divisors (see below), whose sum is σ = 33241728. Its totient is φ = 24450624.

The previous prime is 28806103. The next prime is 28806131. The reversal of 28806113 is 31160882.

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 28806113 - 2⁸ = 28805857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28806103) 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, 19256 + ... + 20697.

It is an arithmetic number, because the mean of its divisors is an integer number (4155216).

Almost surely, 2^28806113 is an apocalyptic number.

It is an amenable number.

28806113 is a deficient number, since it is larger than the sum of its proper divisors (4435615).

28806113 is a wasteful number, since it uses less digits than its factorization.

28806113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40063.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 28806113 is about 5367.1326609280. The cubic root of 28806113 is about 306.5454586897.

Adding to 28806113 its reverse (31160882), we get a palindrome (59966995).

The spelling of 28806113 in words is "twenty-eight million, eight hundred six thousand, one hundred thirteen".