Base | Representation |
---|---|
bin | 100100001011… |
… | …1011100001110 |
3 | 1022200210110202 |
4 | 1020113130032 |
5 | 14324023012 |
6 | 1514333502 |
7 | 320150144 |
oct | 110273416 |
9 | 38623422 |
10 | 18970382 |
11 | a787802 |
12 | 642a292 |
13 | 3c128a2 |
14 | 273b594 |
15 | 19eacc2 |
hex | 121770e |
18970382 has 8 divisors (see below), whose sum is σ = 28647000. Its totient is φ = 9421384.
The previous prime is 18970361. The next prime is 18970411. The reversal of 18970382 is 28307981.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31532 + ... + 32127.
It is an arithmetic number, because the mean of its divisors is an integer number (3580875).
Almost surely, 218970382 is an apocalyptic number.
18970382 is a deficient number, since it is larger than the sum of its proper divisors (9676618).
18970382 is a wasteful number, since it uses less digits than its factorization.
18970382 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 63810.
The product of its (nonzero) digits is 24192, while the sum is 38.
The square root of 18970382 is about 4355.5002008954. The cubic root of 18970382 is about 266.7014388684.
The spelling of 18970382 in words is "eighteen million, nine hundred seventy thousand, three hundred eighty-two".
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