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

15661981 (number)

15661981 is an odd 8-digits composite number following 15661980 and preceding 15661982. In scientific notation, it is written as 1.5661981 × 10^7. The sum of its digits is 37. It has a total of 2 prime factors and 4 positive divisors. There are 14740672 positive integers (up to 15661981) that are relatively prime to 15661981.

Interesting facts

15661981 has 4 divisors, whose sum is 16583292
The reverse of 15661981 is 18916651
Previous prime number is 17

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1

Name

Name	fifteen million six hundred sixty-one thousand nine hundred eighty-one

Notation

Scientific notation	1.5661981 × 10^7
Engineering notation	1.5661981 × 10^6

Prime Factorization of 15661981

Prime Factorization 17 × 921293

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	15661981	Product of the distinct prime numbers

The prime factorization of 15661981 is 17 × 921293. Since it has a total of 2 prime factors.

Most popular turbo-numbers

1, 5, 1, 42, 790, 374, 8391, 7256, 20799, 44884, 477056, 561058, 8581770, 9567259, 28203412, 50403085, 242887635, 550280158, 1621995187, 9092803032

Basic calculations (n = 15661981)

Multiplication

n×y

n×2	31323962
n×3	46985943
n×4	62647924
n×5	78309905

Division

n÷y

n÷2	7830990.5
n÷3	5220660.3333333
n÷3	3915495.25
n÷5	3132396.2

Exponentiation

n^y

n²	245297648844361
n³	3.8418471155451E+21
n⁴	6.0170936528571E+28
n⁵	9.4239606466269E+35

Nth Root

^y√n

²√n	3957.5220782707
³√n	250.19707660243
⁴√n	62.908839428738
⁵√n	27.477001570147

Divisors of 15661981

1, 17, 921293, 15661981

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-15661980	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 15661981 can be divided by 4 positive divisors. The sum of these divisors (counting 15661981) is 1, the average is 0.25.

Base conversion 15661981

Base	System	Value
2	Binary	111011101111101110011101
3	Ternary	1002110201012101
4	Quaternary	323233232131
5	Quinary	13002140411
6	Senary	1315405101
8	Octal	73575635
10	Decimal	15661981
12	Duodecimal	52b3791
16	Hexadecimal	eefb9d
20	Vigesimal	4hhej1
36	Base36	9bov1

Cryptographic Hash Functions

md5	195c4b7dd9e6652a6f8358b6b91a5d29
sha1	4da86283bb58f6ffcb3629934965766967a25f60
sha256	5eaefac056545c8bd0442d0c8216c9f84913f7e6d6c078596dd370bde27bb2f6
sha512	5ef4d65623c58d66e90072fe5fdc6ae9625051e874e182cf4d4f9c6f32dcc80dd342764cdb377b931b444396862464bc7ca09ac4cf57ae7e51db1e63db981934
ripemd-160	66db4974ceade9808d37f1d444545abe0a5b5c3a

15661981 as geometric shapes

Circle

Radius = n

Diameter	31323962
Circumference	98407128.900526
Area	7.7062529155229E+14

Sphere

Radius = n

Volume	1.6092691565882E+22
Surface area	3.0825011662092E+15
Circumference	98407128.900526

Square

Length = n

Perimeter	62647924
Area	245297648844361
Diagonal	22149385.94383

Cube

Length = n

Surface area	1471785893066166
Volume	3.8418471155451E+21
Space diagonal	27127346.839178

Equilateral Triangle

Length = n

Perimeter	46985943
Area	1.0621699769391E+14
Altitude	13563673.419589

Triangular Pyramid

Length = n

Surface area	1.0621699769391E+14
Volume	4.5276602461398E+20
Height	7383128.6479432