Base | Representation |
---|---|
bin | 100111100011… |
… | …0000011000000 |
3 | 1110000101220021 |
4 | 1033012003000 |
5 | 20301443034 |
6 | 2020223224 |
7 | 341144254 |
oct | 117060300 |
9 | 43011807 |
10 | 20734144 |
11 | 10781962 |
12 | 6b3ab14 |
13 | 43ac632 |
14 | 2a7a264 |
15 | 1c486b4 |
hex | 13c60c0 |
20734144 has 56 divisors (see below), whose sum is σ = 43086528. Its totient is φ = 9891840.
The previous prime is 20734141. The next prime is 20734157. The reversal of 20734144 is 44143702.
It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20734141) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183432 + ... + 183544.
Almost surely, 220734144 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 20734144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21543264).
20734144 is an abundant number, since it is smaller than the sum of its proper divisors (22352384).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20734144 is a wasteful number, since it uses less digits than its factorization.
20734144 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 233 (or 223 counting only the distinct ones).
The product of its (nonzero) digits is 2688, while the sum is 25.
The square root of 20734144 is about 4553.4760348551. The cubic root of 20734144 is about 274.7232212490.
Adding to 20734144 its reverse (44143702), we get a palindrome (64877846).
The spelling of 20734144 in words is "twenty million, seven hundred thirty-four thousand, one hundred forty-four".
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