| Base | Representation |
|---|---|
| bin | 11011010001110… |
| … | …10111110110100 |
| 3 | 120221120211100000 |
| 4 | 31220322332310 |
| 5 | 432040044111 |
| 6 | 34412351300 |
| 7 | 5446014141 |
| oct | 1550727664 |
| 9 | 527524300 |
| 10 | 228831156 |
| 11 | 108195264 |
| 12 | 64775530 |
| 13 | 38540268 |
| 14 | 225693c8 |
| 15 | 15151c56 |
| hex | da3afb4 |
228831156 has 72 divisors (see below), whose sum is σ = 612743040. Its totient is φ = 74639232.
The previous prime is 228831151. The next prime is 228831167. The reversal of 228831156 is 651138822.
It is a happy number.
It is a super-3 number, since 3×2288311563 (a number of 26 digits) contains 333 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a self number, because there is not a number n which added to its sum of digits gives 228831156.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (228831151) 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 23 ways as a sum of consecutive naturals, for example, 43180 + ... + 48188.
It is an arithmetic number, because the mean of its divisors is an integer number (8510320).
Almost surely, 2228831156 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 228831156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306371520).
228831156 is an abundant number, since it is smaller than the sum of its proper divisors (383911884).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
228831156 is a wasteful number, since it uses less digits than its factorization.
228831156 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5075 (or 5061 counting only the distinct ones).
The product of its digits is 23040, while the sum is 36.
The square root of 228831156 is about 15127.1661589341. The cubic root of 228831156 is about 611.6529173836.
Adding to 228831156 its reverse (651138822), we get a palindrome (879969978).
The spelling of 228831156 in words is "two hundred twenty-eight million, eight hundred thirty-one thousand, one hundred fifty-six".
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