21781290 (number)

21781290 is an even 8-digits composite number following 21781289 and preceding 21781291. In scientific notation, it is written as 2.1781290 × 10^7. The sum of its digits is 30. It has a total of 4 prime factors and 16 positive divisors. There are 5808336 positive integers (up to 21781290) that are relatively prime to 21781290.

Interesting facts

Basic properties

Name

Name twenty-one million seven hundred eighty-one thousand two hundred ninety

Notation

Scientific notation 2.1781290 × 10^7
Engineering notation 2.1781290 × 10^6

Prime Factorization of 21781290

Prime Factorization 2 × 3 × 5 × 726043

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21781290
Product of the distinct prime numbers

The prime factorization of 21781290 is 2 × 3 × 5 × 726043. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 6, 33, 88, 312, 115, 9350, 7165, 23510, 36772, 902483, 764021, 8001068, 3800340, 95312100, 79367951, 230945839, 990732451, 4527187205, 8477099919

Basic calculations (n = 21781290)

Multiplication

n×y
n×2 43562580
n×3 65343870
n×4 87125160
n×5 108906450

Division

n÷y
n÷2 10890645
n÷3 7260430
n÷3 5445322.5
n÷5 4356258

Exponentiation

ny
n2 474424594064100
n3 1.0333579666442E+22
n4 2.2507869545289E+29
n5 4.902504338481E+36

Nth Root

y√n
2√n 4667.0429610193
3√n 279.27230258839
4√n 68.315759243525
5√n 29.350582139512

Divisors of 21781290

1, 2, 3, 5, 6, 10, 15, 30, 726043, 1452086, 2178129, 3630215, 4356258, 7260430, 10890645, 21781290

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 -21781289
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 21781290 can be divided by 16 positive divisors. The sum of these divisors (counting 21781290) is 1, the average is 0.0625.

Base conversion 21781290

Base System Value
2 Binary 1010011000101101100101010
3 Ternary 1111222121022110
4 Quaternary 1103011230222
5 Quinary 21034000130
6 Senary 2054503150
8 Octal 123055452
10 Decimal 21781290
12 Duodecimal 7364ab6
16 Hexadecimal 14c5b2a
20 Vigesimal 6g2d4a
36 Base36 cyuju

Cryptographic Hash Functions

md5 01a9671f8325e1b6543a50dbe1365d77
sha1 3985ccce881ae1f3750d37a3f79827d70308d7e6
sha256 83b279f6d25db007c9b34db954a837b5466b5b0a70f31461a488f1530410c0d8
sha512 f26366376c774acc93bda44c1ae561040068d4310456d8dedcfeb43b30e5e94363e63baa4f6ef87cc89228feeb25ef2c9fdb14300891de1003716e08ece65a9e
ripemd-160 4b864ba8511f411ae5e60159bba7e9af85b6258a

21781290 as geometric shapes

Circle

Radius = n
Diameter 43562580
Circumference 136855881.29942
Area 1.4904488193941E+15

Sphere

Radius = n
Volume 4.3285197287174E+22
Surface area 5.9617952775764E+15
Circumference 136855881.29942

Square

Length = n
Perimeter 87125160
Area 474424594064100
Diagonal 30803395.723981

Cube

Length = n
Surface area 2846547564384600
Volume 1.0333579666442E+22
Space diagonal 37726300.934392

Equilateral Triangle

Length = n
Perimeter 65343870
Area 2.0543187531982E+14
Altitude 18863150.467196

Triangular Pyramid

Length = n
Surface area 2.0543187531982E+14
Volume 1.2178240426788E+21
Height 10267798.57466