228933111 has 16 divisors (see below), whose sum is σ = 335541888. Its totient is φ = 137685600.

The previous prime is 228933091. The next prime is 228933179. The reversal of 228933111 is 111339822.

It is not a de Polignac number, because 228933111 - 2⁵ = 228933079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228933811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22156 + ... + 30801.

It is an arithmetic number, because the mean of its divisors is an integer number (20971368).

Almost surely, 2^228933111 is an apocalyptic number.

228933111 is a deficient number, since it is larger than the sum of its proper divisors (106608777).

228933111 is a wasteful number, since it uses less digits than its factorization.

228933111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53102.

The product of its digits is 2592, while the sum is 30.

The square root of 228933111 is about 15130.5357142436. The cubic root of 228933111 is about 611.7437439054.

It can be divided in two parts, 228 and 933111, that added together give a palindrome (933339).

The spelling of 228933111 in words is "two hundred twenty-eight million, nine hundred thirty-three thousand, one hundred eleven".