Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

2001981 (number)

2001981 is an odd 7-digits composite number following 2001980 and preceding 2001982. In scientific notation, it is written as 2.001981 × 10^6. The sum of its digits is 21. It has a total of 3 prime factors and 8 positive divisors. There are 1324640 positive integers (up to 2001981) that are relatively prime to 2001981.

Interesting facts

2001981 has 8 divisors, whose sum is 2689344
The reverse of 2001981 is 1891002
Previous prime number is 137

Basic properties

Is Prime? no
Number parity odd
Number length 7
Sum of Digits 21
Digital Root 3

Name

Name	two million one thousand nine hundred eighty-one

Notation

Scientific notation	2.001981 × 10^6
Engineering notation	2.001981 × 10^6

Prime Factorization of 2001981

Prime Factorization 3 × 137 × 4871

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	2001981	Product of the distinct prime numbers

The prime factorization of 2001981 is 3 × 137 × 4871. Since it has a total of 3 prime factors.

Most popular turbo-numbers

2, 8, 7, 73, 714, 853, 5652, 3367, 29566, 16409, 574584, 690930, 9794705, 1592314, 3993820, 20214575, 724449503, 384242840, 4912792074, 5007146533

Basic calculations (n = 2001981)

Multiplication

n×y

n×2	4003962
n×3	6005943
n×4	8007924
n×5	10009905

Division

n÷y

n÷2	1000990.5
n÷3	667327
n÷3	500495.25
n÷5	400396.2

Exponentiation

n^y

n²	4007927924361
n³	8023795553940159141
n⁴	1.6063486246873E+25
n⁵	3.215879426E+31

Nth Root

^y√n

²√n	1414.9137782918
³√n	126.03368965597
⁴√n	37.615339667373
⁵√n	18.209247139885

Divisors of 2001981

1, 3, 137, 411, 4871, 14613, 667327, 2001981

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	-2001980	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 2001981 can be divided by 8 positive divisors. The sum of these divisors (counting 2001981) is 1, the average is 0.125.

Base conversion 2001981

Base	System	Value
2	Binary	111101000110000111101
3	Ternary	10202201012110
4	Quaternary	13220300331
5	Quinary	1003030411
6	Senary	110524233
8	Octal	7506075
10	Decimal	2001981
12	Duodecimal	806679
16	Hexadecimal	1e8c3d
20	Vigesimal	ca4j1
36	Base36	16wql

Cryptographic Hash Functions

md5	3d002607029ddcfdb546b06a3216f3b1
sha1	50553c946979d40e2849f4687b333bc39df69078
sha256	c4defbbe5d8364cbf7109a70a51a0ee0a53dcd08c47bdbc1a646f347c7eebd41
sha512	cb6cce517df5aa208d759fcd78cfe2a8e46047a2800966fbd0306ed4706d299ccf6f8459695765b1dac2ede203aad6185cf1d564268fdd31c7019ed2b79b7a14
ripemd-160	b83bbc117418abd0d36cc6324a647330b81eb2b7

2001981 as geometric shapes

Circle

Radius = n

Diameter	4003962
Circumference	12578817.604453
Area	12591276923290

Sphere

Radius = n

Volume	3.3609996221553E+19
Surface area	50365107693160
Circumference	12578817.604453

Square

Length = n

Perimeter	8007924
Area	4007927924361
Diagonal	2831228.6818133

Cube

Length = n

Surface area	24047567546166
Volume	8023795553940159141
Space diagonal	3467532.8077875

Equilateral Triangle

Length = n

Perimeter	6005943
Area	1735483699516.8
Altitude	1733766.4038938

Triangular Pyramid

Length = n

Surface area	1735483699516.8
Volume	9.4561337450759E+17
Height	943742.89393775