261388891 (number)

261388891 is an odd 9-digits prime number following 261388890 and preceding 261388892. In scientific notation, it is written as 2.61388891 × 10^8. The sum of its digits is 46. It has a total of 1 prime factors and 2 positive divisors. There are 261388890 positive integers (up to 261388891) that are relatively prime to 261388891.

Interesting facts

Basic properties

Name

Name two hundred sixty-one million three hundred eighty-eight thousand eight hundred ninety-one

Notation

Scientific notation 2.61388891 × 10^8
Engineering notation 2.61388891 × 10^6

Prime Factorization of 261388891

Prime Factorization 261388891

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 1
Total number of prime factors
rad Radical 261388891
Product of the distinct prime numbers

The prime factorization of 261388891 is 261388891. Since it has a total of 1 prime factors.

Most popular turbo-numbers

3, 3, 54, 78, 814, 865, 2233, 8371, 83304, 77907, 616437, 644414, 6619985, 9386095, 32789871, 84379582, 693363232, 465535531, 3157906582, 5004925273

Basic calculations (n = 261388891)

Multiplication

n×y
n×2 522777782
n×3 784166673
n×4 1045555564
n×5 1306944455

Division

n÷y
n÷2 130694445.5
n÷3 87129630.333333
n÷3 65347222.75
n÷5 52277778.2

Exponentiation

ny
n2 68324152338209881
n3 1.78591744082E+25
n4 4.6681897927349E+33
n5 1.2202129529005E+42

Nth Root

y√n
2√n 16167.525815659
3√n 639.38489974279
4√n 127.15158597382
5√n 48.245568163506

Divisors of 261388891

1, 261388891

2 divisors

τ Total Divisors 2
Total number of the positive divisors of n
σ Sum of Divisors 261388892
Sum of all the positive divisors of n
s Aliquot Sum 1
Sum of the proper positive divisors of n
A Arithmetic Mean 130694446
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 16167.525846585
Returns the nth root of the product of n divisors
H Harmonic Mean 1.9999999923486
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 261388891 can be divided by 2 positive divisors. The sum of these divisors (counting 261388891) is 261388892, the average is 130694446.

Base conversion 261388891

Base System Value
2 Binary 1111100101000111101001011011
3 Ternary 200012211221011001
4 Quaternary 33211013221123
5 Quinary 1013403421031
6 Senary 41534245431
8 Octal 1745075133
10 Decimal 261388891
12 Duodecimal 73656877
16 Hexadecimal f947a5b
20 Vigesimal 41ddc4b
36 Base36 4bmgyj

Cryptographic Hash Functions

md5 fcad9c143a9d729ef131ebb0e0bfa800
sha1 b22e175f4e0d6faecc84d889a53b90855347b877
sha256 c535cd69a26e44de79c227a3f0e313e23156789c239592f1c060f17cea1097bc
sha512 517f027dd46363f6bd7792a9990801a7711418ec00cd09abb5cbec7ff80a57b0cd40db01cd9fc5eddbc0acc259a8df1b8999396d7e967fda4549e40ac0b49891
ripemd-160 6ddccc718147bfe24e3f7a0850e2877e55462974

261388891 as geometric shapes

Circle

Radius = n
Diameter 522777782
Circumference 1642354839.3912
Area 2.1464665504847E+17

Sphere

Radius = n
Volume 7.4808334826639E+25
Surface area 8.5858662019388E+17
Circumference 1642354839.3912

Square

Length = n
Perimeter 1045555564
Area 68324152338209881
Diagonal 369659714.70586

Cube

Length = n
Surface area 409944914029259286
Volume 1.78591744082E+25
Space diagonal 452738839.74608

Equilateral Triangle

Length = n
Perimeter 784166673
Area 2.9585225808464E+16
Altitude 226369419.87304

Triangular Pyramid

Length = n
Surface area 2.9585225808464E+16
Volume 2.1047238884052E+24
Height 123219904.90195