228135871 has 8 divisors (see below), whose sum is σ = 233840304. Its totient is φ = 222499200.

The previous prime is 228135847. The next prime is 228135881. The reversal of 228135871 is 178531822.

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 228135871 - 2²¹ = 226038719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228135871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228135881) 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, 10090 + ... + 23623.

It is an arithmetic number, because the mean of its divisors is an integer number (29230038).

Almost surely, 2^228135871 is an apocalyptic number.

228135871 is a deficient number, since it is larger than the sum of its proper divisors (5704433).

228135871 is a wasteful number, since it uses less digits than its factorization.

228135871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33881.

The product of its digits is 26880, while the sum is 37.

The square root of 228135871 is about 15104.1673388506. The cubic root of 228135871 is about 611.0328028940.

The spelling of 228135871 in words is "two hundred twenty-eight million, one hundred thirty-five thousand, eight hundred seventy-one".