Live analysis

87,120

87,120 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.).

Abundant Number Harshad / Niven

Properties

Parity: Even
Digit count: 5
Digit sum: 18
Digital root: 9
Palindrome: No
Divisor count: 90
σ(n) — sum of divisors: 321,594

Primality

Prime factorization: 2 ⁴ × 3 ² × 5 × 11 ²

Divisors & multiples

All divisors (90)

1 · 2 · 3 · 4 · 5 · 6 · 8 · 9 · 10 · 11 · 12 · 15 · 16 · 18 · 20 · 22 · 24 · 30 · 33 · 36 · 40 · 44 · 45 · 48 · 55 · 60 · 66 · 72 · 80 · 88 · 90 · 99 · 110 · 120 · 121 · 132 · 144 · 165 · 176 · 180 · 198 · 220 · 240 · 242 · 264 · 330 · 360 · 363 · 396 · 440 · 484 · 495 · 528 · 605 · 660 · 720 · 726 · 792 · 880 · 968 · 990 · 1089 · 1210 · 1320 · 1452 · 1584 · 1815 · 1936 · 1980 · 2178 · 2420 · 2640 · 2904 · 3630 · 3960 · 4356 · 4840 · 5445 · 5808 · 7260 · 7920 · 8712 · 9680 · 10890 · 14520 · 17424 · 21780 · 29040 · 43560 · 87120

Aliquot sum (sum of proper divisors): 234,474

Factor pairs (a × b = 87,120)

1 × 87120

2 × 43560

3 × 29040

4 × 21780

5 × 17424

6 × 14520

8 × 10890

9 × 9680

10 × 8712

11 × 7920

12 × 7260

15 × 5808

16 × 5445

18 × 4840

20 × 4356

22 × 3960

24 × 3630

30 × 2904

33 × 2640

36 × 2420

40 × 2178

44 × 1980

45 × 1936

48 × 1815

55 × 1584

60 × 1452

66 × 1320

72 × 1210

80 × 1089

88 × 990

90 × 968

99 × 880

110 × 792

120 × 726

121 × 720

132 × 660

144 × 605

165 × 528

176 × 495

180 × 484

198 × 440

220 × 396

240 × 363

242 × 360

264 × 330

First multiples

87,120 · 174,240 · 261,360 · 348,480 · 435,600 · 522,720 · 609,840 · 696,960 · 784,080 · 871,200

Representations

In words: eighty-seven thousand one hundred twenty
Ordinal: 87120th
Binary: 10101010001010000
Octal: 252120
Hexadecimal: 15450

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 87120, here are decompositions:

13 + 87107 = 87120
17 + 87103 = 87120
37 + 87083 = 87120
71 + 87049 = 87120
79 + 87041 = 87120
83 + 87037 = 87120
107 + 87013 = 87120
109 + 87011 = 87120

Showing the first eight; more decompositions exist.

Hex color

#015450

RGB(1, 84, 80)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.1.84.80.

Possible US bank routing number

This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.

Routing number

000087120

Federal Reserve

United States Government

Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.

Look up 000087120 on FedACH ↗ Routing Number Lookup (Wise) ↗