228145011 has 8 divisors (see below), whose sum is σ = 304273344. Its totient is φ = 152056680.

The previous prime is 228144977. The next prime is 228145013. The reversal of 228145011 is 110541822.

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

It is not a de Polignac number, because 228145011 - 2¹⁰ = 228143987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228145013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7876 + ... + 22766.

It is an arithmetic number, because the mean of its divisors is an integer number (38034168).

Almost surely, 2^228145011 is an apocalyptic number.

228145011 is a deficient number, since it is larger than the sum of its proper divisors (76128333).

228145011 is a wasteful number, since it uses less digits than its factorization.

228145011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20001.

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 228145011 is about 15104.4699013239. The cubic root of 228145011 is about 611.0409628927.

Adding to 228145011 its reverse (110541822), we get a palindrome (338686833).

The spelling of 228145011 in words is "two hundred twenty-eight million, one hundred forty-five thousand, eleven".