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

81221837 (number)

81221837 is an odd 8-digits composite number following 81221836 and preceding 81221838. In scientific notation, it is written as 8.1221837 × 10^7. The sum of its digits is 32. It has a total of 3 prime factors and 8 positive divisors. There are 77890624 positive integers (up to 81221837) that are relatively prime to 81221837.

Interesting facts

81221837 has 8 divisors, whose sum is 84591000
The reverse of 81221837 is 73812218
Previous prime number is 149

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5

Name

Name	eighty-one million two hundred twenty-one thousand eight hundred thirty-seven

Notation

Scientific notation	8.1221837 × 10^7
Engineering notation	8.1221837 × 10^6

Prime Factorization of 81221837

Prime Factorization 29 × 149 × 18797

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81221837	Product of the distinct prime numbers

The prime factorization of 81221837 is 29 × 149 × 18797. Since it has a total of 3 prime factors.

Most popular turbo-numbers

1, 2, 40, 25, 38, 83, 1713, 3997, 44862, 61792, 480175, 513039, 7284658, 3996342, 95815882, 58799094, 769343540, 286105659, 7407876527, 5973208623

Basic calculations (n = 81221837)

Multiplication

n×y

n×2	162443674
n×3	243665511
n×4	324887348
n×5	406109185

Division

n÷y

n÷2	40610918.5
n÷3	27073945.666667
n÷3	20305459.25
n÷5	16244367.4

Exponentiation

n^y

n²	6596986805654569
n³	5.3581938702003E+23
n⁴	4.352023491398E+31
n⁵	3.534793426385E+39

Nth Root

^y√n

²√n	9012.3158511006
³√n	433.06950403213
⁴√n	94.933217848657
⁵√n	38.188672472692

Divisors of 81221837

1, 29, 149, 4321, 18797, 545113, 2800753, 81221837

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	-81221836	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 81221837 can be divided by 8 positive divisors. The sum of these divisors (counting 81221837) is 1, the average is 0.125.

Base conversion 81221837

Base	System	Value
2	Binary	100110101110101100011001101
3	Ternary	12122211111102012
4	Quaternary	10311311203031
5	Quinary	131243044322
6	Senary	12020511005
8	Octal	465654315
10	Decimal	81221837
12	Duodecimal	2324b465
16	Hexadecimal	4d758cd
20	Vigesimal	157cebh
36	Base36	1ccv65

Cryptographic Hash Functions

md5	040a7da16b5a54c90993cd89bf9d6f47
sha1	ac30a50b3651923dc3086f9726f005594e592676
sha256	3eadaa61b7935bac5303efcb86acea5ce70c77c4853d56044c45fc7feed65ee2
sha512	9e4164aad5bca2418a280ba6a22f530120ab4eff08c35e2b70ba47bee26030caf5db2cbfdc4c5dc709ed4f657e9dd7a83e707582f0ba1da10e3424dc5dd38288
ripemd-160	386ee3b6d6cce71e4d2e77367564f453b51c45b8

81221837 as geometric shapes

Circle

Radius = n

Diameter	162443674
Circumference	510331852.86054
Area	2.0725045284473E+16

Sphere

Radius = n

Volume	2.2444349998841E+24
Surface area	8.2900181137893E+16
Circumference	510331852.86054

Square

Length = n

Perimeter	324887348
Area	6596986805654569
Diagonal	114865023.44626

Cube

Length = n

Surface area	39581920833927414
Volume	5.3581938702003E+23
Space diagonal	140680348.36808

Equilateral Triangle

Length = n

Perimeter	243665511
Area	2.8565790810638E+15
Altitude	70340174.184039

Triangular Pyramid

Length = n

Surface area	2.8565790810638E+15
Volume	6.314692034218E+22
Height	38288341.148752