228135873 has 16 divisors (see below), whose sum is σ = 362750976. Its totient is φ = 124695120.

The previous prime is 228135847. The next prime is 228135881. The reversal of 228135873 is 378531822.

It is not a de Polignac number, because 228135873 - 2⁸ = 228135617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228135823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235683 + ... + 236648.

It is an arithmetic number, because the mean of its divisors is an integer number (22671936).

Almost surely, 2^228135873 is an apocalyptic number.

228135873 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

228135873 is a deficient number, since it is larger than the sum of its proper divisors (134615103).

228135873 is a wasteful number, since it uses less digits than its factorization.

228135873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472364.

The product of its digits is 80640, while the sum is 39.

The square root of 228135873 is about 15104.1674050575. The cubic root of 228135873 is about 611.0328046796.

The spelling of 228135873 in words is "two hundred twenty-eight million, one hundred thirty-five thousand, eight hundred seventy-three".