Base | Representation |
---|---|
bin | 100011001000… |
… | …1000101010010 |
3 | 1021122211120002 |
4 | 1012101011102 |
5 | 14203420200 |
6 | 1454450002 |
7 | 312365525 |
oct | 106210522 |
9 | 37584502 |
10 | 18420050 |
11 | a441290 |
12 | 6203902 |
13 | 3a7c24c |
14 | 2636bbc |
15 | 193cbd5 |
hex | 1191152 |
18420050 has 48 divisors (see below), whose sum is σ = 37845792. Its totient is φ = 6614400.
The previous prime is 18420047. The next prime is 18420053. The reversal of 18420050 is 5002481.
It is an interprime number because it is at equal distance from previous prime (18420047) and next prime (18420053).
It is not an unprimeable number, because it can be changed into a prime (18420053) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58694 + ... + 59006.
It is an arithmetic number, because the mean of its divisors is an integer number (788454).
Almost surely, 218420050 is an apocalyptic number.
18420050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
18420050 is an abundant number, since it is smaller than the sum of its proper divisors (19425742).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18420050 is a wasteful number, since it uses less digits than its factorization.
18420050 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 443 (or 438 counting only the distinct ones).
The product of its (nonzero) digits is 320, while the sum is 20.
The square root of 18420050 is about 4291.8585717612. The cubic root of 18420050 is about 264.0970812991.
Subtracting from 18420050 its reverse (5002481), we obtain a square (13417569 = 36632).
The spelling of 18420050 in words is "eighteen million, four hundred twenty thousand, fifty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.000 sec. • engine limits •