28:36:42:63

Chord information

Harmonics	28:36:42:63
Subharmonics	1/(9:7:6:4)
Intervals from root	1/1–9/7–3/2–9/4
Cents from root	0¢–435¢–702¢–1404¢
Step intervals	9/7, 7/6, 3/2
Step cents	435¢, 267¢, 702¢
Color name	ru add-9 or r,9
Prime limit	7
Genus	32⋅7 (63)
Intervallic odd limit	9
Otonal odd limit	63
Utonal odd limit	9
Consistent edos (d ≥ 2)	5edo*, 36edo**, 41edo*, 53edo*, …
* 2 ≤ d < 4; ** 4 ≤ d < 8; *** 8 ≤ d < 16; …

140:180:210:315 is a septimal add-9 chord.