Base | Representation |
---|---|
bin | 100100001011… |
… | …1010111100011 |
3 | 1022200210001200 |
4 | 1020113113203 |
5 | 14324020313 |
6 | 1514332243 |
7 | 320146236 |
oct | 110272743 |
9 | 38623050 |
10 | 18970083 |
11 | a787560 |
12 | 642a083 |
13 | 3c12702 |
14 | 273b41d |
15 | 19eab73 |
hex | 12175e3 |
18970083 has 24 divisors (see below), whose sum is σ = 30242160. Its totient is φ = 11362560.
The previous prime is 18970057. The next prime is 18970097. The reversal of 18970083 is 38007981.
It is not a de Polignac number, because 18970083 - 25 = 18970051 is a prime.
It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (18970043) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7735 + ... + 9887.
It is an arithmetic number, because the mean of its divisors is an integer number (1260090).
Almost surely, 218970083 is an apocalyptic number.
18970083 is a deficient number, since it is larger than the sum of its proper divisors (11272077).
18970083 is a wasteful number, since it uses less digits than its factorization.
18970083 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2259 (or 2256 counting only the distinct ones).
The product of its (nonzero) digits is 12096, while the sum is 36.
The square root of 18970083 is about 4355.4658763443. The cubic root of 18970083 is about 266.7000376640.
The spelling of 18970083 in words is "eighteen million, nine hundred seventy thousand, eighty-three".
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