| Base | Representation |
|---|---|
| bin | 11011010001000… |
| … | …00111000001100 |
| 3 | 120221101101200000 |
| 4 | 31220200320030 |
| 5 | 432023133421 |
| 6 | 34410204300 |
| 7 | 5445060336 |
| oct | 1550407014 |
| 9 | 527341600 |
| 10 | 228724236 |
| 11 | 1081219a4 |
| 12 | 64723690 |
| 13 | 385036b0 |
| 14 | 2253c456 |
| 15 | 15130226 |
| hex | da20e0c |
228724236 has 144 divisors (see below), whose sum is σ = 674628864. Its totient is φ = 67231296.
The previous prime is 228724229. The next prime is 228724253. The reversal of 228724236 is 632427822.
It is a happy number.
228724236 is a `hidden beast` number, since 228 + 7 + 2 + 423 + 6 = 666.
It is a super-2 number, since 2×2287242362 = 104629552267567392, which contains 22 as substring.
It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.
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 228724236.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 290235 + ... + 291021.
Almost surely, 2228724236 is an apocalyptic number.
228724236 is a gapful number since it is divisible by the number (26) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 228724236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337314432).
228724236 is an abundant number, since it is smaller than the sum of its proper divisors (445904628).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
228724236 is a wasteful number, since it uses less digits than its factorization.
228724236 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 842 (or 828 counting only the distinct ones).
The product of its digits is 64512, while the sum is 36.
The square root of 228724236 is about 15123.6317067033. The cubic root of 228724236 is about 611.5576388104.
The spelling of 228724236 in words is "two hundred twenty-eight million, seven hundred twenty-four thousand, two hundred thirty-six".
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