Base | Representation |
---|---|
bin | 101000010101… |
… | …0001011110110 |
3 | 1110210020112121 |
4 | 1100222023312 |
5 | 20403104220 |
6 | 2033110154 |
7 | 344503135 |
oct | 120521366 |
9 | 43706477 |
10 | 21144310 |
11 | 10a32040 |
12 | 70b835a |
13 | 44c4235 |
14 | 2b4591c |
15 | 1cc9eaa |
hex | 142a2f6 |
21144310 has 32 divisors (see below), whose sum is σ = 41762304. Its totient is φ = 7644000.
The previous prime is 21144307. The next prime is 21144323. The reversal of 21144310 is 1344112.
It is a super-2 number, since 2×211443102 = 894163690752200, which contains 22 as substring.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22755 + ... + 23665.
It is an arithmetic number, because the mean of its divisors is an integer number (1305072).
Almost surely, 221144310 is an apocalyptic number.
21144310 is a deficient number, since it is larger than the sum of its proper divisors (20617994).
21144310 is a wasteful number, since it uses less digits than its factorization.
21144310 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1140.
The product of its (nonzero) digits is 96, while the sum is 16.
The square root of 21144310 is about 4598.2942489580. The cubic root of 21144310 is about 276.5229443359.
Adding to 21144310 its reverse (1344112), we get a palindrome (22488422).
It can be divided in two parts, 211 and 44310, that added together give a square (44521 = 2112).
The spelling of 21144310 in words is "twenty-one million, one hundred forty-four thousand, three hundred ten".
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