1990687321 is an odd 10-digits composite number following 1990687320
and preceding 1990687322 . In scientific notation, it is written as 1.990687321 × 10^9.
The sum of its digits is 46. It has a total of 3 prime factors and 8 positive divisors.
There are 1705125168 positive integers (up to 1990687321) that are relatively prime to 1990687321.
1990687321 has 8 divisors, whose sum is 2276642240
The reverse of 1990687321 is 1237860991
Previous prime number is 1459
Is Prime? no Number parity odd Number length 10 Sum of Digits 46 Digital Root 1
Name
one billion nine hundred ninety million six hundred eighty-seven thousand three hundred twenty-one
Scientific notation
1.990687321 × 10^9
Engineering notation
1.990687321 × 10^9
Prime Factorization
7 × 1459 × 194917
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
3 Total number of prime factors
rad Radical
1990687321 Product of the distinct prime numbers
The prime factorization of 1990687321 is 7 × 1459 × 194917.
Since it has a total of 3 prime factors.
5 , 5 , 99 , 80 , 451 , 48 , 2717 , 8623 , 35951 , 34198 , 666671 , 39228 , 3228746 , 7203102 , 9132863 , 84605914 , 664713527 , 474410602 , 3079473934 , 498772400
n×2
3981374642
n×3
5972061963
n×4
7962749284
n×5
9953436605
n÷2
995343660.5
n÷3
663562440.33333
n÷3
497671830.25
n÷5
398137464.2
n2
3962836009990157041
n3
7.8887674002896E+27
n4
1.5704069242075E+37
n5
3.1261891528304E+46
2 √n44617.119147251
3 √n1257.9624667488
4 √n211.22764768669
5 √n72.410343897396
8 divisors
τ Total Divisors
8 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-1990687320 Sum of the proper positive divisors of n
A Arithmetic Mean
0.125 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
8 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1990687321 can be divided by 8 positive divisors.
The sum of these divisors (counting 1990687321) is 1, the average is 0.125.
Base
System
Value
2
Binary
1110110101001110111101001011001
3
Ternary
12010201211101122001
4
Quaternary
1312221313221121
5
Quinary
13034103443241
6
Senary
525311201001
8
Octal
16651675131
10
Decimal
1990687321
12
Duodecimal
476816161
16
Hexadecimal
76a77a59
20
Vigesimal
1b21fi61
36
Base36
wx7c61
md5
0824f05622fe27789be8f9d5063aa248
sha1
7e95f4fcc84b4a29e1dc826d7753bec385986835
sha256
6af091bbe7d5d6b59a5070cdceb197cb1b30640616f33550f8b589ef6d4d8a69
sha512
f230babce77f265182ccf09aa8d1d91abe32f64931fbb2433f975e303bf459922e7d42d0a2e71de1c4ffaa2fc7d2f8e065884e905830bd8477dad4c97d77df37
ripemd-160
22ad5596e074902fdc24c24914c19febe125b5e2
Diameter
3981374642
Circumference
12507857326.496
Area
1.2449616496366E+19
Volume
3.3044391614171E+28
Surface area
4.9798465985465E+19
Circumference
12507857326.496
Perimeter
7962749284
Area
3962836009990157041
Diagonal
2815257007.8024
Surface area
2.3777016059941E+19
Volume
7.8887674002896E+27
Space diagonal
3447971581.9552
Perimeter
5972061963
Area
1.7159583278416E+18
Altitude
1723985790.9776
Surface area
1.7159583278416E+18
Volume
9.2970015399136E+26
Height
938419002.60079