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144263660 = 2258981047
BaseRepresentation
bin10001001100101…
…00100111101100
3101001110100112112
420212110213230
5243412414120
622152023152
73401135522
oct1046244754
9331410475
10144263660
1174484472
1240391ab8
1323b70c18
1415234312
15c9e9bc5
hex89949ec

144263660 has 24 divisors (see below), whose sum is σ = 306361440. Its totient is φ = 57056384.

The previous prime is 144263641. The next prime is 144263671. The reversal of 144263660 is 66362441.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38744 + ... + 42303.

It is an arithmetic number, because the mean of its divisors is an integer number (12765060).

Almost surely, 2144263660 is an apocalyptic number.

144263660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144263660 is an abundant number, since it is smaller than the sum of its proper divisors (162097780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144263660 is a wasteful number, since it uses less digits than its factorization.

144263660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81145 (or 81143 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 144263660 is about 12010.9808092428. The cubic root of 144263660 is about 524.4679841102.

The spelling of 144263660 in words is "one hundred forty-four million, two hundred sixty-three thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 89 178 356 445 890 1780 81047 162094 324188 405235 810470 1620940 7213183 14426366 28852732 36065915 72131830 144263660