Base | Representation |
---|---|
bin | 100011111111… |
… | …1101001010010 |
3 | 1022111211202211 |
4 | 1013333221102 |
5 | 14312413124 |
6 | 1512302334 |
7 | 316263034 |
oct | 107775122 |
9 | 38454684 |
10 | 18872914 |
11 | a720555 |
12 | 63a19aa |
13 | 3baa408 |
14 | 2713c54 |
15 | 19cbe94 |
hex | 11ffa52 |
18872914 has 8 divisors (see below), whose sum is σ = 28569420. Its totient is φ = 9349776.
The previous prime is 18872911. The next prime is 18872927. The reversal of 18872914 is 41927881.
It is a happy number.
It can be written as a sum of positive squares in 2 ways, for example, as 18533025 + 339889 = 4305^2 + 583^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is not an unprimeable number, because it can be changed into a prime (18872911) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43069 + ... + 43504.
Almost surely, 218872914 is an apocalyptic number.
18872914 is a deficient number, since it is larger than the sum of its proper divisors (9696506).
18872914 is a wasteful number, since it uses less digits than its factorization.
18872914 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 86684.
The product of its digits is 32256, while the sum is 40.
The square root of 18872914 is about 4344.2967209895. The cubic root of 18872914 is about 266.2438922387.
The spelling of 18872914 in words is "eighteen million, eight hundred seventy-two thousand, nine hundred fourteen".
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