44 (number)
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|---|---|---|---|---|
| Cardinal | forty-four | |||
| Ordinal | 44th (forty-fourth) |
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| Factorization | 22× 11 | |||
| Divisors | 1, 2, 4, 11, 22, 44 | |||
| Roman numeral | XLIV | |||
| Binary | 1011002 | |||
| Ternary | 11223 | |||
| Quaternary | 2304 | |||
| Quinary | 1345 | |||
| Senary | 1126 | |||
| Octal | 548 | |||
| Duodecimal | 3812 | |||
| Hexadecimal | 2C16 | |||
| Vigesimal | 2420 | |||
| Base 36 | 1836 | |||
44 (forty-four) is the natural number following 43 and preceding 45.
Forty-four is a tribonacci number, an octahedral number and the number of derangements of 5 items.
Since the greatest prime factor of 442 + 1 = 1937 is 149 and thus more than 44 twice, 44 is a Størmer number.
The aliquot sequence of 44 is (44,40,50,43,1,0).
Given Euler's totient function, φ(44) = 20 and φ(69) = 44.
In decimal notation (base 10), 44 is a palindromic number and a happy number.
Forty-four is:
AD 44, 44 BC, 1944, 2044, etc.
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Wikipedia