21087988 (number)

21087988 is an even 8-digits composite number following 21087987 and preceding 21087989. In scientific notation, it is written as 2.1087988 × 10^7. The sum of its digits is 43. It has a total of 5 prime factors and 24 positive divisors. There are 10079328 positive integers (up to 21087988) that are relatively prime to 21087988.

Interesting facts

Basic properties

Name

Name twenty-one million eighty-seven thousand nine hundred eighty-eight

Notation

Scientific notation 2.1087988 × 10^7
Engineering notation 2.1087988 × 10^6

Prime Factorization of 21087988

Prime Factorization 2 × 2 × 107 × 29 × 1699

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 10543994
Product of the distinct prime numbers

The prime factorization of 21087988 is 2 × 2 × 107 × 29 × 1699. Since it has a total of 5 prime factors.

Most popular turbo-numbers

7, 2, 89, 13, 265, 95, 8652, 8078, 93912, 34070, 934667, 480950, 1911295, 1994866, 41643383, 69639370, 986548277, 184722212, 9755733681, 9941189533

Basic calculations (n = 21087988)

Multiplication

n×y
n×2 42175976
n×3 63263964
n×4 84351952
n×5 105439940

Division

n÷y
n÷2 10543994
n÷3 7029329.3333333
n÷3 5271997
n÷5 4217597.6

Exponentiation

ny
n2 444703237888144
n3 9.3778965441463E+21
n4 1.977609697882E+29
n5 4.1703809577619E+36

Nth Root

y√n
2√n 4592.1659377684
3√n 276.27720171936
4√n 67.765521747924
5√n 29.161309963912

Divisors of 21087988

1, 2, 4, 29, 58, 107, 116, 214, 428, 1699, 3103, 3398, 6206, 6796, 12412, 49271, 98542, 181793, 197084, 363586, 727172, 5271997, 10543994, 21087988

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21087987
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21087988 can be divided by 24 positive divisors. The sum of these divisors (counting 21087988) is 1, the average is 0.041666666666667.

Base conversion 21087988

Base System Value
2 Binary 1010000011100011011110100
3 Ternary 1110200101021121
4 Quaternary 1100130123310
5 Quinary 20344303423
6 Senary 2031553324
8 Octal 120343364
10 Decimal 21087988
12 Duodecimal 708b844
16 Hexadecimal 141c6f4
20 Vigesimal 6bfjj8
36 Base36 cjzlg

Cryptographic Hash Functions

md5 aaa96cf4dbf4dbdb2daff1b271dc62b6
sha1 40195529ed45bd223c8f8bbf78a410bb0ea09232
sha256 0e28445beca245aad60ca1022c63229eb32f2413e56f9f957d0864f985eab2e6
sha512 80f4e65499516f31b9f7479bf88a4c5573b1631ffdf83035804886d058b588bcbb35a094fb9c17c2b678adea4c9f133b6ca5e5902f2ddcfcb544d0c5a8db81bd
ripemd-160 5d7173b73c8bcd315bbe022214d1030ce33caf8b

21087988 as geometric shapes

Circle

Radius = n
Diameter 42175976
Circumference 132499736.35958
Area 1.397076425177E+15

Sphere

Radius = n
Volume 3.928204118562E+22
Surface area 5.5883057007079E+15
Circumference 132499736.35958

Square

Length = n
Perimeter 84351952
Area 444703237888144
Diagonal 29822918.632761

Cube

Length = n
Surface area 2668219427328864
Volume 9.3778965441463E+21
Space diagonal 36525466.645403

Equilateral Triangle

Length = n
Perimeter 63263964
Area 1.9256215057816E+14
Altitude 18262733.322701

Triangular Pyramid

Length = n
Surface area 1.9256215057816E+14
Volume 1.1051957066053E+21
Height 9940972.877587