228432111 has 16 divisors (see below), whose sum is σ = 326915424. Its totient is φ = 141364224.

The previous prime is 228432109. The next prime is 228432121. The reversal of 228432111 is 111234822.

It is not a de Polignac number, because 228432111 - 2¹ = 228432109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228432121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26956 + ... + 34401.

It is an arithmetic number, because the mean of its divisors is an integer number (20432214).

Almost surely, 2^228432111 is an apocalyptic number.

228432111 is a deficient number, since it is larger than the sum of its proper divisors (98483313).

228432111 is a wasteful number, since it uses less digits than its factorization.

228432111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61450.

The product of its digits is 768, while the sum is 24.

The square root of 228432111 is about 15113.9707224806. The cubic root of 228432111 is about 611.2971688375.

Adding to 228432111 its reverse (111234822), we get a palindrome (339666933).

The spelling of 228432111 in words is "two hundred twenty-eight million, four hundred thirty-two thousand, one hundred eleven".