228688115 has 8 divisors (see below), whose sum is σ = 274708608. Its totient is φ = 182761920.

The previous prime is 228688111. The next prime is 228688121. The reversal of 228688115 is 511886822.

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 228688115 - 2² = 228688111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228688111) 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, 18122 + ... + 28031.

It is an arithmetic number, because the mean of its divisors is an integer number (34338576).

Almost surely, 2^228688115 is an apocalyptic number.

228688115 is a deficient number, since it is larger than the sum of its proper divisors (46020493).

228688115 is an equidigital number, since it uses as much as digits as its factorization.

228688115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47149.

The product of its digits is 61440, while the sum is 41.

The square root of 228688115 is about 15122.4374688739. The cubic root of 228688115 is about 611.5254439473.

The spelling of 228688115 in words is "two hundred twenty-eight million, six hundred eighty-eight thousand, one hundred fifteen".