Base | Representation |
---|---|
bin | 10001011100011011… |
… | …111100100111000000 |
3 | 1210100101010002220000 |
4 | 101130123330213000 |
5 | 301330024333300 |
6 | 12334343520000 |
7 | 1232110213323 |
oct | 213433744700 |
9 | 53311102800 |
10 | 18730699200 |
11 | 7a41a9a5a4 |
12 | 3768a59000 |
13 | 19c672ac85 |
14 | c998b67ba |
15 | 7495e1c00 |
hex | 45c6fc9c0 |
18730699200 has 420 divisors, whose sum is σ = 69512931840. Its totient is φ = 4946780160.
The previous prime is 18730699199. The next prime is 18730699213. The reversal of 18730699200 is 299603781.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 14644161 + ... + 14645439.
Almost surely, 218730699200 is an apocalyptic number.
18730699200 is a gapful number since it is divisible by the number (10) 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 18730699200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34756465920).
18730699200 is an abundant number, since it is smaller than the sum of its proper divisors (50782232640).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18730699200 is a wasteful number, since it uses less digits than its factorization.
18730699200 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1426 (or 1402 counting only the distinct ones).
The product of its (nonzero) digits is 163296, while the sum is 45.
The spelling of 18730699200 in words is "eighteen billion, seven hundred thirty million, six hundred ninety-nine thousand, two hundred".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.073 sec. • engine limits •