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1,028,231

1,028,231 is a prime, 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.).

1,028,231 (one million twenty-eight thousand two hundred thirty-one) is an odd 7-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0xFB087.

Arithmetic Number Chen Prime Cube-Free Deficient Number Odious Number Pernicious Number Prime Sophie Germain Prime Squarefree

Interestingness

Properties

Parity
Odd
Digit count
7
Digit sum
17
Digit product
0
Digital root
8
Palindrome
No
Bit width
20 bits
Reversed
1,328,201
Square (n²)
1,057,258,989,361
Cube (n³)
1,087,106,467,889,650,391
Divisor count
2
σ(n) — sum of divisors
1,028,232
φ(n) — Euler's totient
1,028,230

Primality

1,028,231 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 1028231
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 1,028,231)
1 × 1028231
First multiples
1,028,231 · 2,056,462 (double) · 3,084,693 · 4,112,924 · 5,141,155 · 6,169,386 · 7,197,617 · 8,225,848 · 9,254,079 · 10,282,310

Sums & aliquot sequence

As consecutive integers: 514,115 + 514,116

Continued fraction of √n

√1,028,231 = [1014; (57, 1, 16, 1, 1, 1, 7, 12, 2, 6, 1, 5, 3, 2, 1, 4, 8, 2, 2, 1, 1, 15, 1, 1, …)]

Representations

In words
one million twenty-eight thousand two hundred thirty-one
Ordinal
1028231st
Binary
11111011000010000111
Octal
3730207
Hexadecimal
0xFB087
Base64
D7CH
One's complement
4,293,939,064 (32-bit)
Scientific notation
1.028231 × 10⁶
As a duration
1,028,231 s = 11 days, 21 hours, 37 minutes, 11 seconds
In other bases
ternary (3) 1221020110122
quaternary (4) 3323002013
quinary (5) 230400411
senary (6) 34012155
septenary (7) 11511521
nonary (9) 1836418
undecimal (11) 642586
duodecimal (12) 41705b
tridecimal (13) 2a0029
tetradecimal (14) 1caa11
pentadecimal (15) 1549db

As an angle

1,028,231° = 2,856 × 360° + 71°
71° ≈ 1.239 rad
Compass bearing: ENE (east-northeast)

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹
Egyptian hieroglyphic
𓁨𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓎆𓎆𓎆𓏺
Chinese
一百零二萬八千二百三十一
Chinese (financial)
壹佰零貳萬捌仟貳佰參拾壹
In other modern scripts
Eastern Arabic ١٠٢٨٢٣١ Devanagari १०२८२३१ Bengali ১০২৮২৩১ Tamil ௧௦௨௮௨௩௧ Thai ๑๐๒๘๒๓๑ Tibetan ༡༠༢༨༢༣༡ Khmer ១០២៨២៣១ Lao ໑໐໒໘໒໓໑ Burmese ၁၀၂၈၂၃၁

Also seen as

Prime neighborhood

Adjacent primes:

Hex color
#0FB087
RGB(15, 176, 135)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.15.176.135.

Address
0.15.176.135
Class
reserved
IPv4-mapped IPv6
::ffff:0.15.176.135

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

Possible date

Could be parsed as a date. Most likely interpretation: Sunday, January 2, 8231 (MDDYYYY (US, single-digit month)).

Other possible interpretations (3)
  • 8231-02-01 (DMMYYYY (Euro, single-digit day))
  • 8231-10-02 (MMDYYYY (US, single-digit day))
  • 8231-02-10 (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 1,028,231 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

  • Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
  • Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.