Base | Representation |
---|---|
bin | 101101010100… |
… | …1000001010101 |
3 | 1122201011221100 |
4 | 1122221001111 |
5 | 22040322411 |
6 | 2205140313 |
7 | 405651666 |
oct | 132510125 |
9 | 48634840 |
10 | 23760981 |
11 | 12459a82 |
12 | 7b5a699 |
13 | 4bcc26a |
14 | 322736d |
15 | 2145456 |
hex | 16a9055 |
23760981 has 12 divisors (see below), whose sum is σ = 34365708. Its totient is φ = 15820224.
The previous prime is 23760959. The next prime is 23761007. The reversal of 23760981 is 18906732.
It can be written as a sum of positive squares in 2 ways, for example, as 19660356 + 4100625 = 4434^2 + 2025^2 .
It is not a de Polignac number, because 23760981 - 25 = 23760949 is a prime.
It is a super-2 number, since 2×237609812 = 1129168436164722, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (23760901) by changing a digit.
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 11 ways as a sum of consecutive naturals, for example, 9631 + ... + 11843.
It is an arithmetic number, because the mean of its divisors is an integer number (2863809).
Almost surely, 223760981 is an apocalyptic number.
It is an amenable number.
23760981 is a deficient number, since it is larger than the sum of its proper divisors (10604727).
23760981 is a wasteful number, since it uses less digits than its factorization.
23760981 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3412 (or 3409 counting only the distinct ones).
The product of its (nonzero) digits is 18144, while the sum is 36.
The square root of 23760981 is about 4874.5236690368. The cubic root of 23760981 is about 287.4891479206.
The spelling of 23760981 in words is "twenty-three million, seven hundred sixty thousand, nine hundred eighty-one".
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