228471136 has 24 divisors (see below), whose sum is σ = 459375840. Its totient is φ = 111804288.

The previous prime is 228471119. The next prime is 228471137. The reversal of 228471136 is 631174822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228471137) 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 3 ways as a sum of consecutive naturals, for example, 74451 + ... + 77458.

It is an arithmetic number, because the mean of its divisors is an integer number (19140660).

Almost surely, 2^228471136 is an apocalyptic number.

It is an amenable number.

228471136 is an abundant number, since it is smaller than the sum of its proper divisors (230904704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228471136 is a wasteful number, since it uses less digits than its factorization.

228471136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151966 (or 151958 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 228471136 is about 15115.2616914164. The cubic root of 228471136 is about 611.3319778865.

The spelling of 228471136 in words is "two hundred twenty-eight million, four hundred seventy-one thousand, one hundred thirty-six".