228816123 has 8 divisors (see below), whose sum is σ = 305272128. Its totient is φ = 152452104.

The previous prime is 228816109. The next prime is 228816139. The reversal of 228816123 is 321618822.

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

It is a de Polignac number, because none of the positive numbers 2^k-228816123 is a prime.

It is a super-2 number, since 2×228816123² = 104713636289502258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228816193) 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, 16965 + ... + 27302.

It is an arithmetic number, because the mean of its divisors is an integer number (38159016).

Almost surely, 2^228816123 is an apocalyptic number.

228816123 is a deficient number, since it is larger than the sum of its proper divisors (76456005).

228816123 is a wasteful number, since it uses less digits than its factorization.

228816123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45993.

The product of its digits is 9216, while the sum is 33.

The square root of 228816123 is about 15126.6692632582. The cubic root of 228816123 is about 611.6395229668.

The spelling of 228816123 in words is "two hundred twenty-eight million, eight hundred sixteen thousand, one hundred twenty-three".