19902789 is an odd 8-digits composite number following 19902788
and preceding 19902790 . In scientific notation, it is written as 1.9902789 × 10^7.
The sum of its digits is 45. It has a total of 4 prime factors and 12 positive divisors.
There are 13186152 positive integers (up to 19902789) that are relatively prime to 19902789.
19902789 has 12 divisors, whose sum is 28926976
The reverse of 19902789 is 98720991
Previous prime number is 163
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 45
Digital Root 9
Name
nineteen million nine hundred two thousand seven hundred eighty-nine
Scientific notation
1.9902789 × 10^7
Engineering notation
1.9902789 × 10^6
Prime Factorization
3 × 3 × 163 × 13567
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
6634263
Product of the distinct prime numbers
The prime factorization of 19902789 is 3 × 3 × 163 × 13567.
Since it has a total of 4 prime factors.
7 , 4 , 48 , 22 , 449 , 38 , 6528 , 739 , 80054 , 59491 , 511536 , 565314 , 5225099 , 5464697 , 68654508 , 92046266 , 565788320 , 563106600 , 6338529661 , 5219765164
n×2
39805578
n×3
59708367
n×4
79611156
n×5
99513945
n÷2
9951394.5
n÷3
6634263
n÷3
4975697.25
n÷5
3980557.8
n2
396121009978521
n3
7.8839128800694E+21
n4
1.569118545464E+29
n5
3.1229835326358E+36
2 √n
4461.2541958512
3 √n
271.00126177796
4 √n
66.792620818854
5 √n
28.825894164519
1 , 3 , 9 , 163 , 489 , 1467 , 13567 , 40701 , 122103 , 2211421 , 6634263 , 19902789
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-19902788
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1
Returns the nth root of the product of n divisors
H
Harmonic Mean
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 19902789 can be divided by 12 positive divisors.
The sum of these divisors (counting 19902789) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1001011111011000101000101
3
Ternary
1101110011111100
4
Quaternary
1023323011011
5
Quinary
20043342124
6
Senary
1550330313
8
Octal
113730505
10
Decimal
19902789
12
Duodecimal
67b9999
16
Hexadecimal
12fb145
20
Vigesimal
647gj9
36
Base36
bul39
md5
02bd751fa05a68572928ed3df2712578
sha1
c1ae38be89dcfefe94ccb467bbe3ab63df7bee63
sha256
19473ba67161bf36be897038d85ba8f08844bba25a896cdb39aa961d6e7c74c4
sha512
0c400b7fb1b622819007e74dc5c8ecd157e942e83ac53314861136751904f7be24eb4e494d8e34ae9494ca8684fe80437d79805751e71248c6f05cb50b28c096
ripemd-160
1a1dc38c39dd7ff6b3f35dd68ff77a4e464f4e4b
Diameter
39805578
Circumference
125052911.4167
Area
1.2444508548811E+15
Volume
3.3024057047424E+22
Surface area
4.9778034195244E+15
Circumference
125052911.4167
Perimeter
79611156
Area
396121009978521
Diagonal
28146794.13285
Surface area
2376726059871126
Volume
7.8839128800694E+21
Space diagonal
34472641.760323
Perimeter
59708367
Area
1.7152542880707E+14
Altitude
17236320.880161
Surface area
1.7152542880707E+14
Volume
9.2912804329684E+20
Height
9382264.71095