Base | Representation |
---|---|
bin | 100011111010… |
… | …0101001001000 |
3 | 1022102112221201 |
4 | 1013310221020 |
5 | 14304442343 |
6 | 1511313544 |
7 | 316014454 |
oct | 107645110 |
9 | 38375851 |
10 | 18827848 |
11 | a69a706 |
12 | 637b8b4 |
13 | 3b92a50 |
14 | 2701664 |
15 | 19bd94d |
hex | 11f4a48 |
18827848 has 32 divisors (see below), whose sum is σ = 38215800. Its totient is φ = 8644608.
The previous prime is 18827839. The next prime is 18827849. The reversal of 18827848 is 84872881.
It is a happy number.
It can be written as a sum of positive squares in 4 ways, for example, as 6563844 + 12264004 = 2562^2 + 3502^2 .
It is a super-2 number, since 2×188278482 = 708975720622208, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 18827798 and 18827807.
It is not an unprimeable number, because it can be changed into a prime (18827849) 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 7 ways as a sum of consecutive naturals, for example, 27640 + ... + 28312.
Almost surely, 218827848 is an apocalyptic number.
It is an amenable number.
18827848 is an abundant number, since it is smaller than the sum of its proper divisors (19387952).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18827848 is a wasteful number, since it uses less digits than its factorization.
18827848 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 961 (or 957 counting only the distinct ones).
The product of its digits is 229376, while the sum is 46.
The square root of 18827848 is about 4339.1068205335. The cubic root of 18827848 is about 266.0318050424.
It can be divided in two parts, 1882 and 7848, that added together give a triangular number (9730 = T139).
The spelling of 18827848 in words is "eighteen million, eight hundred twenty-seven thousand, eight hundred forty-eight".
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