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

81507989 (number)

81507989 is an odd 8-digits prime number following 81507988 and preceding 81507990. In scientific notation, it is written as 8.1507989 × 10^7. The sum of its digits is 47. It has a total of 1 prime factors and 2 positive divisors. There are 81507988 positive integers (up to 81507989) that are relatively prime to 81507989.

Interesting facts

81507989 has 2 divisors, whose sum is 81507990
The reverse of 81507989 is 98970518
Previous prime number is 1

Basic properties

Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 47
Digital Root 2

Name

Name	eighty-one million five hundred seven thousand nine hundred eighty-nine

Notation

Scientific notation	8.1507989 × 10^7
Engineering notation	8.1507989 × 10^6

Prime Factorization of 81507989

Prime Factorization 81507989

Composite number

ω	Distinct Factors	1	Total number of distinct prime factors
Ω	Total Factors	1	Total number of prime factors
rad	Radical	81507989	Product of the distinct prime numbers

The prime factorization of 81507989 is 81507989. Since it has a total of 1 prime factors.

Most popular turbo-numbers

10, 5, 44, 48, 461, 430, 6519, 8370, 42616, 89609, 490692, 173810, 7632837, 5337903, 19414607, 90081782, 673907442, 64276272, 7460082484, 1937223439

Basic calculations (n = 81507989)

Multiplication

n×y

n×2	163015978
n×3	244523967
n×4	326031956
n×5	407539945

Division

n÷y

n÷2	40753994.5
n÷3	27169329.666667
n÷3	20376997.25
n÷5	16301597.8

Exponentiation

n^y

n²	6643552270824121
n³	5.4150258541126E+23
n⁴	4.4136786775172E+31
n⁵	3.5975007309661E+39

Nth Root

^y√n

²√n	9028.177501578
³√n	433.57748916656
⁴√n	95.016722220765
⁵√n	38.215543073193

Divisors of 81507989

1, 81507989

2 divisors

τ	Total Divisors	2	Total number of the positive divisors of n
σ	Sum of Divisors	81507990	Sum of all the positive divisors of n
s	Aliquot Sum	1	Sum of the proper positive divisors of n
A	Arithmetic Mean	40753995	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	9028.1775569602	Returns the nth root of the product of n divisors
H	Harmonic Mean	1.9999999754625	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81507989 can be divided by 2 positive divisors. The sum of these divisors (counting 81507989) is 81507990, the average is 40753995.

Base conversion 81507989

Base	System	Value
2	Binary	100110110111011011010010101
3	Ternary	12200101000221102
4	Quaternary	10312323122111
5	Quinary	131331223424
6	Senary	12030555445
8	Octal	466733225
10	Decimal	81507989
12	Duodecimal	23368b85
16	Hexadecimal	4dbb695
20	Vigesimal	15989j9
36	Base36	1cizyt

Cryptographic Hash Functions

md5	5e31de2ee2ea40371047e5774b730652
sha1	3707c6d2f253bcb735570254066e29424412d72f
sha256	8d4e18fe1f02c14422a6ef9434d1434369fa1014b65c3b6de9860ef1ca64f093
sha512	33116e20e84d3bd28bfe27f1a4c7f48834d38e578bb4e6bdaba92addcd8a1a0e8c3d42860c85de63738cb4587d3d91c102627d4902359f1d3bd33007a4954c28
ripemd-160	53818596f57d30f4ea0bfdb0cbbd79fc2612d9a2

81507989 as geometric shapes

Circle

Radius = n

Diameter	163015978
Circumference	512129798.90256
Area	2.0871335007761E+16

Sphere

Radius = n

Volume	2.2682407256372E+24
Surface area	8.3485340031043E+16
Circumference	512129798.90256

Square

Length = n

Perimeter	326031956
Area	6643552270824121
Diagonal	115269703.48556

Cube

Length = n

Surface area	39861313624944726
Volume	5.4150258541126E+23
Space diagonal	141175978.17077

Equilateral Triangle

Length = n

Perimeter	244523967
Area	2.8767425189517E+15
Altitude	70587989.085383

Triangular Pyramid

Length = n

Surface area	2.8767425189517E+15
Volume	6.3816691695725E+22
Height	38423234.495186