21886987 is an odd 8-digits prime number following 21886986
and preceding 21886988 . In scientific notation, it is written as 2.1886987 × 10^7.
The sum of its digits is 49. It has a total of 1 prime factors and 2 positive divisors.
There are 21886986 positive integers (up to 21886987) that are relatively prime to 21886987.
21886987 has 2 divisors, whose sum is 21886988
The reverse of 21886987 is 78968812
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 49 Digital Root 4
Name
twenty-one million eight hundred eighty-six thousand nine hundred eighty-seven
Scientific notation
2.1886987 × 10^7
Engineering notation
2.1886987 × 10^6
Prime Factorization
21886987
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
21886987 Product of the distinct prime numbers
The prime factorization of 21886987 is 21886987.
Since it has a total of 1 prime factors.
9 , 9 , 85 , 93 , 475 , 159 , 2735 , 2636 , 24125 , 84609 , 634321 , 345385 , 4087942 , 9718639 , 28741476 , 7752893 , 124759839 , 673336690 , 2744393827 , 2450102760
n×2
43773974
n×3
65660961
n×4
87547948
n×5
109434935
n÷2
10943493.5
n÷3
7295662.3333333
n÷3
5471746.75
n÷5
4377397.4
n2
479040199938169
n3
1.0484746628524E+22
n4
2.294795131568E+29
n5
5.0226151212292E+36
2 √n4678.353022165
3 √n279.7233108563
4 √n68.398486987396
5 √n29.379012634338
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
21886988 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
10943494 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
4678.3531290402 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999086215 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21886987 can be divided by 2 positive divisors.
The sum of these divisors (counting 21886987) is 21886988, the average is 10943494.
Base
System
Value
2
Binary
1010011011111100000001011
3
Ternary
1112011222022011
4
Quaternary
1103133200023
5
Quinary
21100340422
6
Senary
2101040351
8
Octal
123374013
10
Decimal
21886987
12
Duodecimal
73b60b7
16
Hexadecimal
14df80b
20
Vigesimal
6gfh97
36
Base36
d143v
md5
3ff1c24f02cebcb5efa7ad6cf8ffdb39
sha1
9abbee097f643e7db01c8ceaed83a8ccda839bc9
sha256
ae16f2541c186cd1f9f7f2269e207079ee48a6b6e2aca877ff34106adb9f5bce
sha512
2b5d1df885eeac57b12a5476e8f80d916ade8180f68f1c2e65601b6edcd0c0058b64c887a514b07245860407bc4d238dba47f7c0a6893e0c3fff26e3715f480b
ripemd-160
ffd702a3b0306f16ce4127ec64e228168d3b5f5c
Diameter
43773974
Circumference
137519995.13683
Area
1.5049491728999E+15
Volume
4.3918403977229E+22
Surface area
6.0197966915998E+15
Circumference
137519995.13683
Perimeter
87547948
Area
479040199938169
Diagonal
30952873.854884
Surface area
2874241199629014
Volume
1.0484746628524E+22
Space diagonal
37909373.5086
Perimeter
65660961
Area
2.0743049129022E+14
Altitude
18954686.7543
Surface area
2.0743049129022E+14
Volume
1.2356392400087E+21
Height
10317624.618295