21781492 (number)

21781492 is an even 8-digits composite number following 21781491 and preceding 21781493. In scientific notation, it is written as 2.1781492 × 10^7. The sum of its digits is 34. It has a total of 4 prime factors and 12 positive divisors. There are 10658936 positive integers (up to 21781492) that are relatively prime to 21781492.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1781492 × 10^7
Engineering notation 2.1781492 × 10^6

Prime Factorization of 21781492

Prime Factorization 2 × 2 × 47 × 115859

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10890746
Product of the distinct prime numbers

The prime factorization of 21781492 is 2 × 2 × 47 × 115859. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 9, 17, 19, 251, 17, 3206, 4129, 6634, 75670, 289856, 551195, 8378945, 7951455, 72001439, 43143812, 588366323, 43414831, 1025491337, 1041321877

Basic calculations (n = 21781492)

Multiplication

n×y
n×2 43562984
n×3 65344476
n×4 87125968
n×5 108907460

Division

n÷y
n÷2 10890746
n÷3 7260497.3333333
n÷3 5445373
n÷5 4356298.4

Exponentiation

ny
n2 474433393746064
n3 1.0333867170413E+22
n4 2.2508704510141E+29
n5 4.90273167218E+36

Nth Root

y√n
2√n 4667.0646020813
3√n 279.27316591085
4√n 68.315917633311
5√n 29.350636578855

Divisors of 21781492

1, 2, 4, 47, 94, 188, 115859, 231718, 463436, 5445373, 10890746, 21781492

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21781491
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21781492 can be divided by 12 positive divisors. The sum of these divisors (counting 21781492) is 1, the average is 0.083333333333333.

Base conversion 21781492

Base System Value
2 Binary 1010011000101101111110100
3 Ternary 1111222121120221
4 Quaternary 1103011233310
5 Quinary 21034001432
6 Senary 2054504124
8 Octal 123055764
10 Decimal 21781492
12 Duodecimal 7365044
16 Hexadecimal 14c5bf4
20 Vigesimal 6g2dec
36 Base36 cyupg

Cryptographic Hash Functions

md5 4d353d0bf82787ad4bb545d3ad9f3798
sha1 dd29149594ba8883baf0c1b79539de70bb125e1a
sha256 8dd010ac56ccb46e2745c67707509b5fbc0a33c6b871089495795858524c7f84
sha512 9d6b10b38ba576641ecfe5985761b89a59c6431da532533c33bbce30c9d6ba81d543ed104172039a141f278b67b1df2e5c5844b5a17dc672672a2d78e86731d4
ripemd-160 41323ebe4239fac083346ac9722b3ba3efad493e

21781492 as geometric shapes

Circle

Radius = n
Diameter 43562984
Circumference 136857150.50285
Area 1.4904764644103E+15

Sphere

Radius = n
Volume 4.3286401580989E+22
Surface area 5.9619058576412E+15
Circumference 136857150.50285

Square

Length = n
Perimeter 87125968
Area 474433393746064
Diagonal 30803681.395121

Cube

Length = n
Surface area 2846600362476384
Volume 1.0333867170413E+22
Space diagonal 37726650.808655

Equilateral Triangle

Length = n
Perimeter 65344476
Area 2.0543568569388E+14
Altitude 18863325.404328

Triangular Pyramid

Length = n
Surface area 2.0543568569388E+14
Volume 1.2178579253466E+21
Height 10267893.798374