Base | Representation |
---|---|
bin | 100010000100100… |
… | …0001011000011000 |
3 | 2221200011101001000 |
4 | 1010021001120120 |
5 | 4320130400030 |
6 | 305235025000 |
7 | 40221113130 |
oct | 10411013030 |
9 | 2850141030 |
10 | 1143215640 |
11 | 537351916 |
12 | 27aa3b160 |
13 | 152b02078 |
14 | abb8bac0 |
15 | 6a570860 |
hex | 44241618 |
1143215640 has 512 divisors, whose sum is σ = 4613990400. Its totient is φ = 246343680.
The previous prime is 1143215581. The next prime is 1143215651. The reversal of 1143215640 is 465123411.
It is a happy number.
1143215640 is a `hidden beast` number, since 1 + 1 + 4 + 3 + 2 + 15 + 640 = 666.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 17062887 + ... + 17062953.
It is an arithmetic number, because the mean of its divisors is an integer number (9011700).
Almost surely, 21143215640 is an apocalyptic number.
1143215640 is a gapful number since it is divisible by the number (10) 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 1143215640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2306995200).
1143215640 is an abundant number, since it is smaller than the sum of its proper divisors (3470774760).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1143215640 is a wasteful number, since it uses less digits than its factorization.
1143215640 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 192 (or 182 counting only the distinct ones).
The product of its (nonzero) digits is 2880, while the sum is 27.
The square root of 1143215640 is about 33811.4720176451. The cubic root of 1143215640 is about 1045.6252266075.
It can be divided in two parts, 11432 and 15640, that added together give a palindrome (27072).
The spelling of 1143215640 in words is "one billion, one hundred forty-three million, two hundred fifteen thousand, six hundred forty".
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