Hum, nope. Solid state memory is inherently built in powers of 2. Since addressing is a big part of the chip, and addressing is inherently at powers of 2, making them in any other way would be wasteful.

Hard disks aren't inherently divided in cylinders, sectors and plates. Those come in several different distribution, without the power of 2 bias. Flash memory comes in powers of 2, but flash drivers reserve some of it, thus flash drivers are inherently a little bit smaller than a power of 2.