Base | Representation |
---|---|
bin | 10000110010110011… |
… | …101010101010111100 |
3 | 1201112200220102210000 |
4 | 100302303222222330 |
5 | 243412230232413 |
6 | 12141154114300 |
7 | 1205566541502 |
oct | 206263525274 |
9 | 51480812700 |
10 | 18032274108 |
11 | 7713826482 |
12 | 35b2b7b990 |
13 | 1914b206a4 |
14 | c30c2c672 |
15 | 708131073 |
hex | 432ceaabc |
18032274108 has 60 divisors (see below), whose sum is σ = 47160566992. Its totient is φ = 6008126400.
The previous prime is 18032274103. The next prime is 18032274131. The reversal of 18032274108 is 80147223081.
18032274108 is a `hidden beast` number, since 18 + 0 + 3 + 227 + 410 + 8 = 666.
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 (18032274103) by changing a digit.
It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 815616 + ... + 837432.
Almost surely, 218032274108 is an apocalyptic number.
18032274108 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is an amenable number.
18032274108 is an abundant number, since it is smaller than the sum of its proper divisors (29128292884).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18032274108 is a wasteful number, since it uses less digits than its factorization.
18032274108 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 24384 (or 24373 counting only the distinct ones).
The product of its (nonzero) digits is 21504, while the sum is 36.
Adding to 18032274108 its reverse (80147223081), we get a palindrome (98179497189).
It can be divided in two parts, 1803 and 2274108, that added together give a triangular number (2275911 = T2133).
The spelling of 18032274108 in words is "eighteen billion, thirty-two million, two hundred seventy-four thousand, one hundred eight".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.077 sec. • engine limits •