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1,028,521

1,028,521 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.).

1,028,521 (one million twenty-eight thousand five hundred twenty-one) is an odd 7-digit number. It is a composite number with 8 divisors, and factors as 13 × 61 × 1,297. Written other ways, in hexadecimal, 0xFB1A9.

Arithmetic Number Cube-Free Deficient Number Evil Number Sphenic Number Squarefree

Interestingness

Properties

Parity
Odd
Digit count
7
Digit sum
19
Digit product
0
Digital root
1
Palindrome
No
Bit width
20 bits
Reversed
1,258,201
Square (n²)
1,057,855,447,441
Cube (n³)
1,088,026,542,657,464,761
Divisor count
8
σ(n) — sum of divisors
1,126,664
φ(n) — Euler's totient
933,120
Sum of prime factors
1,371

Primality

Prime factorization: 13 × 61 × 1297

Nearest primes: 1,028,509 (−12) · 1,028,557 (+36)

Divisors & multiples

All divisors (8)
1 · 13 · 61 · 793 · 1297 · 16861 · 79117 · 1028521
Aliquot sum (sum of proper divisors): 98,143
Factor pairs (a × b = 1,028,521)
1 × 1028521
13 × 79117
61 × 16861
793 × 1297
First multiples
1,028,521 · 2,057,042 (double) · 3,085,563 · 4,114,084 · 5,142,605 · 6,171,126 · 7,199,647 · 8,228,168 · 9,256,689 · 10,285,210

Sums & aliquot sequence

As a sum of two squares: 80² + 1,011² = 136² + 1,005² = 261² + 980² = 315² + 964²
As consecutive integers: 514,260 + 514,261 79,111 + 79,112 + … + 79,123 39,546 + 39,547 + … + 39,571 16,831 + 16,832 + … + 16,891
Aliquot sequence: 1,028,521 98,143 1 0 — terminates at zero

Continued fraction of √n

√1,028,521 = [1014; (6, 4, 6, 3, 11, 1, 3, 8, 1, 3, 1, 224, 1, 1, 2, 1, 9, 1, 5, 1, 1, 1, 11, 2, …)]

Representations

In words
one million twenty-eight thousand five hundred twenty-one
Ordinal
1028521st
Binary
11111011000110101001
Octal
3730651
Hexadecimal
0xFB1A9
Base64
D7Gp
One's complement
4,293,938,774 (32-bit)
Scientific notation
1.028521 × 10⁶
As a duration
1,028,521 s = 11 days, 21 hours, 42 minutes, 1 second
In other bases
ternary (3) 1221020212101
quaternary (4) 3323012221
quinary (5) 230403041
senary (6) 34013401
septenary (7) 11512414
nonary (9) 1836771
undecimal (11) 64281a
duodecimal (12) 417261
tridecimal (13) 2a01c0
tetradecimal (14) 1cab7b
pentadecimal (15) 154b31

As an angle

1,028,521° = 2,857 × 360° + 1°
1° ≈ 0.017 rad
Compass bearing: N (north)

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹 𒁹
Egyptian hieroglyphic
𓁨𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺
Chinese
一百零二萬八千五百二十一
Chinese (financial)
壹佰零貳萬捌仟伍佰貳拾壹
In other modern scripts
Eastern Arabic ١٠٢٨٥٢١ Devanagari १०२८५२१ Bengali ১০২৮৫২১ Tamil ௧௦௨௮௫௨௧ Thai ๑๐๒๘๕๒๑ Tibetan ༡༠༢༨༥༢༡ Khmer ១០២៨៥២១ Lao ໑໐໒໘໕໒໑ Burmese ၁၀၂၈၅၂၁

Also seen as

Hex color
#0FB1A9
RGB(15, 177, 169)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.15.177.169.

Address
0.15.177.169
Class
reserved
IPv4-mapped IPv6
::ffff:0.15.177.169

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

Possible date

Could be parsed as a date. Most likely interpretation: Thursday, January 2, 8521 (MDDYYYY (US, single-digit month)).

Other possible interpretations (3)
  • 8521-02-01 (DMMYYYY (Euro, single-digit day))
  • 8521-10-02 (MMDYYYY (US, single-digit day))
  • 8521-02-10 (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 1,028,521 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