228008111 has 4 divisors (see below), whose sum is σ = 228168000. Its totient is φ = 227848224.

The previous prime is 228008101. The next prime is 228008147. The reversal of 228008111 is 111800822.

It is a happy number.

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 228008111 - 2⁶ = 228008047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228008101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77786 + ... + 80663.

It is an arithmetic number, because the mean of its divisors is an integer number (57042000).

Almost surely, 2^228008111 is an apocalyptic number.

228008111 is a deficient number, since it is larger than the sum of its proper divisors (159889).

228008111 is a wasteful number, since it uses less digits than its factorization.

228008111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159888.

The product of its (nonzero) digits is 256, while the sum is 23.

The square root of 228008111 is about 15099.9374502016. The cubic root of 228008111 is about 610.9187186456.

Adding to 228008111 its reverse (111800822), we get a palindrome (339808933).

The spelling of 228008111 in words is "two hundred twenty-eight million, eight thousand, one hundred eleven".