Base | Representation |
---|---|
bin | 10011110010010000… |
… | …010101001011110010 |
3 | 2000211112210000220012 |
4 | 103302100111023302 |
5 | 322002011032110 |
6 | 13432013414522 |
7 | 1351311013436 |
oct | 236220251362 |
9 | 60745700805 |
10 | 21244236530 |
11 | 90118aa380 |
12 | 414a79a442 |
13 | 20073ba07a |
14 | 105764c9c6 |
15 | 8450e3905 |
hex | 4f24152f2 |
21244236530 has 32 divisors (see below), whose sum is σ = 41735070720. Its totient is φ = 7721637120.
The previous prime is 21244236527. The next prime is 21244236539. The reversal of 21244236530 is 3563244212.
It is a super-3 number, since 3×212442365303 (a number of 32 digits) contains 333 as substring.
It is not an unprimeable number, because it can be changed into a prime (21244236539) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203162 + ... + 289418.
It is an arithmetic number, because the mean of its divisors is an integer number (1304220960).
Almost surely, 221244236530 is an apocalyptic number.
21244236530 is a deficient number, since it is larger than the sum of its proper divisors (20490834190).
21244236530 is a wasteful number, since it uses less digits than its factorization.
21244236530 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 88514.
The product of its (nonzero) digits is 34560, while the sum is 32.
The spelling of 21244236530 in words is "twenty-one billion, two hundred forty-four million, two hundred thirty-six thousand, five hundred thirty".
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