228665873 has 8 divisors (see below), whose sum is σ = 234266208. Its totient is φ = 223078464.

The previous prime is 228665869. The next prime is 228665911. The reversal of 228665873 is 378566822.

It is a happy number.

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 228665873 - 2² = 228665869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228665803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39290 + ... + 44732.

It is an arithmetic number, because the mean of its divisors is an integer number (29283276).

Almost surely, 2^228665873 is an apocalyptic number.

It is an amenable number.

228665873 is a deficient number, since it is larger than the sum of its proper divisors (5600335).

228665873 is an equidigital number, since it uses as much as digits as its factorization.

228665873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6463.

The product of its digits is 967680, while the sum is 47.

The square root of 228665873 is about 15121.7020536711. The cubic root of 228665873 is about 611.5056178333.

The spelling of 228665873 in words is "two hundred twenty-eight million, six hundred sixty-five thousand, eight hundred seventy-three".