71661981 (number)

71661981 is an odd 8-digits composite number following 71661980 and preceding 71661982. In scientific notation, it is written as 7.1661981 × 10^7. The sum of its digits is 39. It has a total of 4 prime factors and 16 positive divisors. There are 46600944 positive integers (up to 71661981) that are relatively prime to 71661981.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 7.1661981 × 10^7
Engineering notation 7.1661981 × 10^6

Prime Factorization of 71661981

Prime Factorization 3 × 47 × 383 × 1327

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 71661981
Product of the distinct prime numbers

The prime factorization of 71661981 is 3 × 47 × 383 × 1327. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 3, 62, 26, 450, 360, 408, 3652, 61094, 47322, 101537, 156860, 784635, 917293, 13962296, 16040855, 469026158, 491764339, 4445699951, 878500158

Basic calculations (n = 71661981)

Multiplication

n×y
n×2 143323962
n×3 214985943
n×4 286647924
n×5 358309905

Division

n÷y
n÷2 35830990.5
n÷3 23887327
n÷3 17915495.25
n÷5 14332396.2

Exponentiation

ny
n2 5135439520844361
n3 3.680157693694E+23
n4 2.637273907225E+31
n5 1.8899227263135E+39

Nth Root

y√n
2√n 8465.3399813593
3√n 415.36471736224
4√n 92.007282219177
5√n 37.244123827266

Divisors of 71661981

1, 3, 47, 141, 383, 1149, 1327, 3981, 18001, 54003, 62369, 187107, 508241, 1524723, 23887327, 71661981

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -71661980
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 71661981 can be divided by 16 positive divisors. The sum of these divisors (counting 71661981) is 1, the average is 0.0625.

Base conversion 71661981

Base System Value
2 Binary 100010001010111100110011101
3 Ternary 11222211210202110
4 Quaternary 10101113212131
5 Quinary 121321140411
6 Senary 11035544233
8 Octal 421274635
10 Decimal 71661981
12 Duodecimal 1bbbb079
16 Hexadecimal 445799d
20 Vigesimal 127hej1
36 Base36 16nyql

Cryptographic Hash Functions

md5 10971068db1eedee12dba30766e4f37a
sha1 d06cd7b003ba4fea470598ee5b2bdffe72a65154
sha256 6e78f4e786a5ccb41fc8bc022f5a3c552b3ed4a580dd8329d8424f3fae9e9c9c
sha512 ce4d5426a1e60c7ec8509b4e4431fdd1f44c69785403ab562f108edb0633c6f7bde8adc572feaa319c5fdce866006fb288331fdfc65316877f1b566f63100645
ripemd-160 2f14a03fb8e35bce72c75032b9b7aec9938a01d5

71661981 as geometric shapes

Circle

Radius = n
Diameter 143323962
Circumference 450265506.10258
Area 1.6133459071639E+16

Sphere

Radius = n
Volume 1.5415408499415E+24
Surface area 6.4533836286557E+16
Circumference 450265506.10258

Square

Length = n
Perimeter 286647924
Area 5135439520844361
Diagonal 101345345.43672

Cube

Length = n
Surface area 30812637125066166
Volume 3.680157693694E+23
Space diagonal 124122192.06304

Equilateral Triangle

Length = n
Perimeter 214985943
Area 2.2237105423249E+15
Altitude 62061096.031518

Triangular Pyramid

Length = n
Surface area 2.2237105423249E+15
Volume 4.3371074350781E+22
Height 33781781.812241