228688107 has 4 divisors (see below), whose sum is σ = 304917480. Its totient is φ = 152458736.

The previous prime is 228688099. The next prime is 228688111. The reversal of 228688107 is 701886822.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 228688107 - 2³ = 228688099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228688127) 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 3 ways as a sum of consecutive naturals, for example, 38114682 + ... + 38114687.

It is an arithmetic number, because the mean of its divisors is an integer number (76229370).

Almost surely, 2^228688107 is an apocalyptic number.

228688107 is a deficient number, since it is larger than the sum of its proper divisors (76229373).

228688107 is an equidigital number, since it uses as much as digits as its factorization.

228688107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76229372.

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 228688107 is about 15122.4372043662. The cubic root of 228688107 is about 611.5254368164.

The spelling of 228688107 in words is "two hundred twenty-eight million, six hundred eighty-eight thousand, one hundred seven".