Base | Representation |
---|---|
bin | 100010011101… |
… | …1000111011100 |
3 | 1020222221112200 |
4 | 1010323013130 |
5 | 14111133212 |
6 | 1443131500 |
7 | 306401121 |
oct | 104730734 |
9 | 36887480 |
10 | 18067932 |
11 | a220783 |
12 | 6073b90 |
13 | 3987bac |
14 | 2584748 |
15 | 18bd6dc |
hex | 113b1dc |
18067932 has 36 divisors (see below), whose sum is σ = 46257120. Its totient is φ = 5945472.
The previous prime is 18067919. The next prime is 18067937. The reversal of 18067932 is 23976081.
It is a tau number, because it is divible by the number of its divisors (36).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (18067937) 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 11 ways as a sum of consecutive naturals, for example, 333 + ... + 6020.
It is an arithmetic number, because the mean of its divisors is an integer number (1284920).
Almost surely, 218067932 is an apocalyptic number.
18067932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 18067932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23128560).
18067932 is an abundant number, since it is smaller than the sum of its proper divisors (28189188).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18067932 is a wasteful number, since it uses less digits than its factorization.
18067932 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6442 (or 6437 counting only the distinct ones).
The product of its (nonzero) digits is 18144, while the sum is 36.
The square root of 18067932 is about 4250.6390107841. The cubic root of 18067932 is about 262.4034148066.
The spelling of 18067932 in words is "eighteen million, sixty-seven thousand, nine hundred thirty-two".
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