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1,025,991

1,025,991 is a composite number, odd.

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.).

1,025,991 (one million twenty-five thousand nine hundred ninety-one) is an odd 7-digit number. It is a composite number with 12 divisors, and factors as 3² × 29 × 3,931. Written other ways, in hexadecimal, 0xFA7C7.

Arithmetic Number Cube-Free Deficient Number Evil Number Happy Number

Interestingness

Properties

Parity
Odd
Digit count
7
Digit sum
27
Digit product
0
Digital root
9
Palindrome
No
Bit width
20 bits
Reversed
1,995,201
Square (n²)
1,052,657,532,081
Cube (n³)
1,080,017,153,997,317,271
Divisor count
12
σ(n) — sum of divisors
1,533,480
φ(n) — Euler's totient
660,240
Sum of prime factors
3,966

Primality

Prime factorization: 3 2 × 29 × 3931

Nearest primes: 1,025,957 (−34) · 1,026,029 (+38)

Divisors & multiples

All divisors (12)
1 · 3 · 9 · 29 · 87 · 261 · 3931 · 11793 · 35379 · 113999 · 341997 · 1025991
Aliquot sum (sum of proper divisors): 507,489
Factor pairs (a × b = 1,025,991)
1 × 1025991
3 × 341997
9 × 113999
29 × 35379
87 × 11793
261 × 3931
First multiples
1,025,991 · 2,051,982 (double) · 3,077,973 · 4,103,964 · 5,129,955 · 6,155,946 · 7,181,937 · 8,207,928 · 9,233,919 · 10,259,910

Sums & aliquot sequence

As consecutive integers: 512,995 + 512,996 341,996 + 341,997 + 341,998 170,996 + 170,997 + 170,998 + 170,999 + 171,000 + 171,001 113,995 + 113,996 + … + 114,003
Aliquot sequence: 1,025,991 507,489 174,591 91,129 1 0 — terminates at zero

Continued fraction of √n

√1,025,991 = [1012; (1, 10, 2, 1, 1, 1, 1, 1, 3, 3, 5, 1, 1, 7, 9, 1, 5, 1, 1, 7, 1, 6, 1, 1, …)]

Representations

In words
one million twenty-five thousand nine hundred ninety-one
Ordinal
1025991st
Binary
11111010011111000111
Octal
3723707
Hexadecimal
0xFA7C7
Base64
D6fH
One's complement
4,293,941,304 (32-bit)
Scientific notation
1.025991 × 10⁶
As a duration
1,025,991 s = 11 days, 20 hours, 59 minutes, 51 seconds
In other bases
ternary (3) 1221010101200
quaternary (4) 3322133013
quinary (5) 230312431
senary (6) 33553543
septenary (7) 11502141
nonary (9) 1833350
undecimal (11) 64092a
duodecimal (12) 4158b3
tridecimal (13) 29bcc5
tetradecimal (14) 1c9c91
pentadecimal (15) 153ee6

As an angle

1,025,991° = 2,849 × 360° + 351°
351° ≈ 6.126 rad
Compass bearing: N (north)

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹
Egyptian hieroglyphic
𓁨𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺
Chinese
一百零二萬五千九百九十一
Chinese (financial)
壹佰零貳萬伍仟玖佰玖拾壹
In other modern scripts
Eastern Arabic ١٠٢٥٩٩١ Devanagari १०२५९९१ Bengali ১০২৫৯৯১ Tamil ௧௦௨௫௯௯௧ Thai ๑๐๒๕๙๙๑ Tibetan ༡༠༢༥༩༩༡ Khmer ១០២៥៩៩១ Lao ໑໐໒໕໙໙໑ Burmese ၁၀၂၅၉၉၁

Also seen as

Hex color
#0FA7C7
RGB(15, 167, 199)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.15.167.199.

Address
0.15.167.199
Class
reserved
IPv4-mapped IPv6
::ffff:0.15.167.199

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

Possible date

Could be parsed as a date. Most likely interpretation: Wednesday, January 2, 5991 (MDDYYYY (US, single-digit month)).

Other possible interpretations (3)
  • 5991-02-01 (DMMYYYY (Euro, single-digit day))
  • 5991-10-02 (MMDYYYY (US, single-digit day))
  • 5991-02-10 (DDMYYYY (Euro, single-digit month))
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 1,025,991 and was likely granted around 1912.

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

Related reading