28200115 has 8 divisors (see below), whose sum is σ = 33900768. Its totient is φ = 22519680.

The previous prime is 28200113. The next prime is 28200143. The reversal of 28200115 is 51100282.

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

It is not a de Polignac number, because 28200115 - 2¹ = 28200113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28200092 and 28200101.

It is not an unprimeable number, because it can be changed into a prime (28200113) 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, 1791 + ... + 7720.

It is an arithmetic number, because the mean of its divisors is an integer number (4237596).

Almost surely, 2^28200115 is an apocalyptic number.

28200115 is a deficient number, since it is larger than the sum of its proper divisors (5700653).

28200115 is an equidigital number, since it uses as much as digits as its factorization.

28200115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10109.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 28200115 is about 5310.3780468061. The cubic root of 28200115 is about 304.3805936932.

Adding to 28200115 its reverse (51100282), we get a palindrome (79300397).

The spelling of 28200115 in words is "twenty-eight million, two hundred thousand, one hundred fifteen".