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

21490987 (number)

21490987 is an odd 8-digits composite number following 21490986 and preceding 21490988. In scientific notation, it is written as 2.1490987 × 10^7. The sum of its digits is 40. It has a total of 3 prime factors and 8 positive divisors. There are 18145512 positive integers (up to 21490987) that are relatively prime to 21490987.

Interesting facts

21490987 has 8 divisors, whose sum is 24928256
The reverse of 21490987 is 78909412
Previous prime number is 7

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 40
Digital Root 4

Name

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

Notation

Scientific notation	2.1490987 × 10^7
Engineering notation	2.1490987 × 10^6

Prime Factorization of 21490987

Prime Factorization 67 × 7 × 45823

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21490987	Product of the distinct prime numbers

The prime factorization of 21490987 is 67 × 7 × 45823. Since it has a total of 3 prime factors.

Most popular turbo-numbers

1, 6, 24, 58, 605, 29, 4285, 908, 49897, 9030, 390296, 71299, 899277, 2712188, 35182030, 13337475, 698457106, 204195805, 9036177020, 7974092921

Basic calculations (n = 21490987)

Multiplication

n×y

n×2	42981974
n×3	64472961
n×4	85963948
n×5	107454935

Division

n÷y

n÷2	10745493.5
n÷3	7163662.3333333
n÷3	5372746.75
n÷5	4298197.4

Exponentiation

n^y

n²	461862522234169
n³	9.9258814611217E+21
n⁴	2.1331698944451E+29
n⁵	4.5843926470311E+36

Nth Root

^y√n

²√n	4635.8372490846
³√n	278.02602709928
⁴√n	68.086982963593
⁵√n	29.271924228462

Divisors of 21490987

1, 7, 67, 469, 45823, 320761, 3070141, 21490987

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21490986	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	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	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21490987 can be divided by 8 positive divisors. The sum of these divisors (counting 21490987) is 1, the average is 0.125.

Base conversion 21490987

Base	System	Value
2	Binary	1010001111110110100101011
3	Ternary	1111102212002111
4	Quaternary	1101332310223
5	Quinary	21000202422
6	Senary	2044343151
8	Octal	121766453
10	Decimal	21490987
12	Duodecimal	7244ab7
16	Hexadecimal	147ed2b
20	Vigesimal	6e6797
36	Base36	csmjv

Cryptographic Hash Functions

md5	106e1976e07c095ddec6cf004244f750
sha1	2e379b2723b3bd0a90dcd81a826d6159c4d913c5
sha256	1ed810559aee1dca85c25b59135f870c849b29181db0ad0860bfb7166222837a
sha512	815f0e86909c58fc208245e761e804caeaae3620233be82d29b1876b98278158061f04bfdb30c0ac1470db9a3f3eab726deb7dc9fff3dfa3ec5fa7ee71948513
ripemd-160	9c613511c9ff302d3b0ce18aab789082e39e359a

21490987 as geometric shapes

Circle

Radius = n

Diameter	42981974
Circumference	135031853.75519
Area	1.4509839068193E+15

Sphere

Radius = n

Volume	4.1577435038218E+22
Surface area	5.8039356272773E+15
Circumference	135031853.75519

Square

Length = n

Perimeter	85963948
Area	461862522234169
Diagonal	30392845.284184

Cube

Length = n

Surface area	2771175133405014
Volume	9.9258814611217E+21
Space diagonal	37223481.388802

Equilateral Triangle

Length = n

Perimeter	64472961
Area	1.9999233865537E+14
Altitude	18611740.694401

Triangular Pyramid

Length = n

Surface area	1.9999233865537E+14
Volume	1.1697763484022E+21
Height	10130948.428061