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

21491887 (number)

21491887 is an odd 8-digits composite number following 21491886 and preceding 21491888. In scientific notation, it is written as 2.1491887 × 10^7. The sum of its digits is 40. It has a total of 3 prime factors and 8 positive divisors. There are 21239712 positive integers (up to 21491887) that are relatively prime to 21491887.

Interesting facts

21491887 has 8 divisors, whose sum is 21745856
The reverse of 21491887 is 78819412
Previous prime number is 373

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-one thousand eight hundred eighty-seven

Notation

Scientific notation	2.1491887 × 10^7
Engineering notation	2.1491887 × 10^6

Prime Factorization of 21491887

Prime Factorization 157 × 373 × 367

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21491887	Product of the distinct prime numbers

The prime factorization of 21491887 is 157 × 373 × 367. Since it has a total of 3 prime factors.

Most popular turbo-numbers

2, 8, 80, 77, 756, 373, 9427, 5912, 20172, 31072, 968409, 358443, 9140649, 393753, 40194759, 73830613, 475491867, 19558244, 7149934913, 5073995092

Basic calculations (n = 21491887)

Multiplication

n×y

n×2	42983774
n×3	64475661
n×4	85967548
n×5	107459435

Division

n÷y

n÷2	10745943.5
n÷3	7163962.3333333
n÷3	5372971.75
n÷5	4298377.4

Exponentiation

n^y

n²	461901206820769
n³	9.9271285421556E+21
n⁴	2.1335272486248E+29
n⁵	4.5853526538866E+36

Nth Root

^y√n

²√n	4635.9343179126
³√n	278.02990810502
⁴√n	68.08769578942
⁵√n	29.272169394405

Divisors of 21491887

1, 157, 367, 373, 57619, 58561, 136891, 21491887

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	-21491886	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 21491887 can be divided by 8 positive divisors. The sum of these divisors (counting 21491887) is 1, the average is 0.125.

Base conversion 21491887

Base	System	Value
2	Binary	1010001111111000010101111
3	Ternary	1111102220022211
4	Quaternary	1101333002233
5	Quinary	21000220022
6	Senary	2044351251
8	Octal	121770257
10	Decimal	21491887
12	Duodecimal	7245527
16	Hexadecimal	147f0af
20	Vigesimal	6e69e7
36	Base36	csn8v

Cryptographic Hash Functions

md5	77ced9b93ff9a228c4a1d3f3d466e623
sha1	0ddac20efe7389224952851d9db48f87efa28a62
sha256	a0b355155f734ae7dd101b4edabfdfe2e5c33bf78e6e868eecb4a5d4fa0903c9
sha512	a344d59df49e8426eb61174139539f6a2ea06ea69b80869f768664581b20a84ba2b6c6147571d44ca389d8b468d41a3303e02004140974643d8a60ad23f2d36e
ripemd-160	0c4882f196a65f19fa2c4bc4a56bc1fcf2783a4a

21491887 as geometric shapes

Circle

Radius = n

Diameter	42983774
Circumference	135037508.62196
Area	1.4511054380324E+15

Sphere

Radius = n

Volume	4.1582658799037E+22
Surface area	5.8044217521296E+15
Circumference	135037508.62196

Square

Length = n

Perimeter	85967548
Area	461901206820769
Diagonal	30394118.07639

Cube

Length = n

Surface area	2771407240924614
Volume	9.9271285421556E+21
Space diagonal	37225040.234529

Equilateral Triangle

Length = n

Perimeter	64475661
Area	2.0000908957274E+14
Altitude	18612520.117265

Triangular Pyramid

Length = n

Surface area	2.0000908957274E+14
Volume	1.1699233183115E+21
Height	10131372.69213