144

Properties by base:

More about this number at Positiv Integers and Number Empire.

The number is not a prime.

Its 6 (2 unique) factors are:
2⁴ = 16
3² = 9

Its 15 divisors are:
1
2
3
4
6
8
9
12
16
18
24
36
48
72
144
Its aliquote sum is:
259
makeing it a abundant number.

As Unicode codepoint (since version 1.1) this number represents this character: DEVICE CONTROL STRING in Latin_1_Sup (Source: https://www.unicode.org/Public/UCD/latest/ucdxml/ucd.all.grouped.zip); HTML: 

In the work of Johann Sebastian Bach BWV 144 is Nimm, was dein ist, und gehe hin

The number appears at position 1638 of the decimal digits of π surrounded by
1921732172147723501414419735685481613611573 Source: The Pi-Search Page

Computations done with Math::BigInt 1.999811 and Math::Pari 2.030523 based on PARI/GP 2.11.3 (elapsed: 622.303ms; cpu: 86.9169999999997ms)