228111145 has 8 divisors (see below), whose sum is σ = 275373504. Its totient is φ = 181395504.

The previous prime is 228111133. The next prime is 228111181. The reversal of 228111145 is 541111822.

228111145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 228111145 - 2²¹ = 226013993 is a prime.

It is a super-2 number, since 2×228111145² = 104069388946422050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135759 + ... + 137428.

It is an arithmetic number, because the mean of its divisors is an integer number (34421688).

Almost surely, 2^228111145 is an apocalyptic number.

It is an amenable number.

228111145 is a deficient number, since it is larger than the sum of its proper divisors (47262359).

228111145 is a wasteful number, since it uses less digits than its factorization.

228111145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273359.

The product of its digits is 640, while the sum is 25.

The square root of 228111145 is about 15103.3488008455. The cubic root of 228111145 is about 611.0107269518.

Adding to 228111145 its reverse (541111822), we get a palindrome (769222967).

The spelling of 228111145 in words is "two hundred twenty-eight million, one hundred eleven thousand, one hundred forty-five".