Live analysis

491,000

491,000 is a composite number, even.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).

491,000 (four hundred ninety-one thousand) is an even 6-digit number. It is a composite number with 32 divisors, and factors as 2³ × 5³ × 491. Its proper divisors sum to 660,280, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x77DF8.

Abundant Number Evil Number Gapful Number Practical Number Semiperfect Number

Interestingness

★ ☆ ☆ ☆ ☆

3 notable facts · grade F

490,988 490,989 490,990 490,991 490,992 490,993 490,994 490,995 490,996 490,997 490,998 490,999 491,000 491,001 491,002 491,003 491,004 491,005 491,006 491,007 491,008 491,009 491,010 491,011 491,012

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Properties

Parity: Even
Digit count: 6
Digit sum: 14
Digit product: 0
Digital root: 5
Palindrome: No
Bit width: 19 bits
Reversed: 194
Square (n²): 241,081,000,000
Cube (n³): 118,370,771,000,000,000
Divisor count: 32
σ(n) — sum of divisors: 1,151,280
φ(n) — Euler's totient: 196,000
Sum of prime factors: 512

Primality

Prime factorization: 2 ³ × 5 ³ × 491

Nearest primes: 490,993 (−7) · 491,003 (+3)

Divisors & multiples

All divisors (32)

1 · 2 · 4 · 5 · 8 · 10 · 20 · 25 · 40 · 50 · 100 · 125 · 200 · 250 · 491 · 500 · 982 · 1000 · 1964 · 2455 · 3928 · 4910 · 9820 · 12275 · 19640 · 24550 · 49100 · 61375 · 98200 · 122750 · 245500 (half) · 491000

Aliquot sum (sum of proper divisors): 660,280

Factor pairs (a × b = 491,000)

1 × 491000

2 × 245500

4 × 122750

5 × 98200

8 × 61375

10 × 49100

20 × 24550

25 × 19640

40 × 12275

50 × 9820

100 × 4910

125 × 3928

200 × 2455

250 × 1964

491 × 1000

500 × 982

First multiples

491,000 · 982,000 (double) · 1,473,000 · 1,964,000 · 2,455,000 · 2,946,000 · 3,437,000 · 3,928,000 · 4,419,000 · 4,910,000

Sums & aliquot sequence

As consecutive integers: 98,198 + 98,199 + 98,200 + 98,201 + 98,202 30,680 + 30,681 + … + 30,695 19,628 + 19,629 + … + 19,652 6,098 + 6,099 + … + 6,177

Aliquot sequence: 491,000 → 660,280 → 914,360 → 1,143,040 → 1,800,320 → 2,697,880 → 3,372,440 → 4,349,560 → 5,437,040 → 10,253,920 → 15,253,520 → 20,211,100 → 33,792,388 → 34,804,924 → 41,715,828 → 91,944,972 → 184,418,388 — unresolved within range

Continued fraction of √n

√491,000 = [700; (1, 2, 2, 55, 1, 1, 1, 2, 4, 55, 1, 4, 1, 4, 1, 55, 4, 2, 1, 1, 1, 55, 2, 2, …)]

Period length 26 — the block in parentheses repeats forever.

Representations

In words: four hundred ninety-one thousand
Ordinal: 491000th
Binary: 1110111110111111000
Octal: 1676770
Hexadecimal: 0x77DF8
Base64: B334
One's complement: 4,294,476,295 (32-bit)
Scientific notation: 4.91 × 10⁵
As a duration: 491,000 s = 5 days, 16 hours, 23 minutes, 20 seconds

In other bases

ternary (3) 220221112012

quaternary (4) 1313313320

quinary (5) 111203000

senary (6) 14305052

septenary (7) 4113326

nonary (9) 827465

undecimal (11) 305994

duodecimal (12) 1b8188

tridecimal (13) 142643

tetradecimal (14) cad16

pentadecimal (15) 9a735

As an angle

491,000° = 1,363 × 360° + 320°

320° ≈ 5.585 rad

Compass bearing: NW (northwest)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹 𒌋𒌋
Egyptian hieroglyphic: 𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼
Greek (Milesian): ͵υϟα
Chinese: 四十九萬一千
Chinese (financial): 肆拾玖萬壹仟

In other modern scripts

Eastern Arabic ٤٩١٠٠٠ Devanagari ४९१००० Bengali ৪৯১০০০ Tamil ௪௯௧௦௦௦ Thai ๔๙๑๐๐๐ Tibetan ༤༩༡༠༠༠ Khmer ៤៩១០០០ Lao ໔໙໑໐໐໐ Burmese ၄၉၁၀၀၀

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 491000, here are decompositions:

7 + 490993 = 491000
31 + 490969 = 491000
43 + 490957 = 491000
73 + 490927 = 491000
79 + 490921 = 491000
109 + 490891 = 491000
151 + 490849 = 491000
163 + 490837 = 491000

Showing the first eight; more decompositions exist.

Hex color

#077DF8

RGB(7, 125, 248)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.7.125.248.

Address: 0.7.125.248
Class: reserved
IPv4-mapped IPv6: ::ffff:0.7.125.248

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Possible US patent number

This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 491,000 and was likely granted around 1892.

Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.

Look up US491,000 on Google Patents ↗ Look up on USPTO ↗

Position in π

The digit sequence 491000 first appears in π at position 175,605 of the decimal expansion (the 175,605ordinal-suffix:th digit after the integer 3).

Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.

Look up 491000 on Pi Search ↗