138,822
138,822 is a composite number, even.
138,822 (one hundred thirty-eight thousand eight hundred twenty-two) is an even 6-digit number. It is a composite number with 16 divisors, and factors as 2 × 3 × 17 × 1,361. Its proper divisors sum to 155,370, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x21E46.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 24
- Digit product
- 768
- Digital root
- 6
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 228,831
- Recamán's sequence
- a(491,183) = 138,822
- Square (n²)
- 19,271,547,684
- Cube (n³)
- 2,675,314,792,588,248
- Divisor count
- 16
- σ(n) — sum of divisors
- 294,192
- φ(n) — Euler's totient
- 43,520
- Sum of prime factors
- 1,383
Primality
Prime factorization: 2 × 3 × 17 × 1361
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,822 = [372; (1, 1, 2, 3, 372, 3, 2, 1, 1, 744)]
Period length 10 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-eight thousand eight hundred twenty-two
- Ordinal
- 138822nd
- Binary
- 100001111001000110
- Octal
- 417106
- Hexadecimal
- 0x21E46
- Base64
- Ah5G
- One's complement
- 4,294,828,473 (32-bit)
- Scientific notation
- 1.38822 × 10⁵
- As a duration
- 138,822 s = 1 day, 14 hours, 33 minutes, 42 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρληωκβʹ
- Mayan (base 20)
- 𝋱·𝋧·𝋡·𝋢
- Chinese
- 一十三萬八千八百二十二
- Chinese (financial)
- 壹拾參萬捌仟捌佰貳拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138822, here are decompositions:
- 23 + 138799 = 138822
- 29 + 138793 = 138822
- 59 + 138763 = 138822
- 83 + 138739 = 138822
- 139 + 138683 = 138822
- 181 + 138641 = 138822
- 193 + 138629 = 138822
- 223 + 138599 = 138822
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 B9 86 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.30.70.
- Address
- 0.2.30.70
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.30.70
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 138,822 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.