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144544980 = 223519112613
BaseRepresentation
bin10001001110110…
…01010011010100
3101001222122102210
420213121103110
5244000414410
622202033420
73403416636
oct1047312324
9331878383
10144544980
1174656868
12404a8870
1323c3bc98
14152a8a56
15ca53220
hex89d94d4

144544980 has 48 divisors (see below), whose sum is σ = 406877184. Its totient is φ = 38340480.

The previous prime is 144544979. The next prime is 144544991. The reversal of 144544980 is 89445441.

It is a nialpdrome in base 15.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 5154 + ... + 17766.

It is an arithmetic number, because the mean of its divisors is an integer number (8476608).

Almost surely, 2144544980 is an apocalyptic number.

144544980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144544980 is an abundant number, since it is smaller than the sum of its proper divisors (262332204).

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

144544980 is a wasteful number, since it uses less digits than its factorization.

144544980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12816 (or 12814 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 144544980 is about 12022.6860559527. The cubic root of 144544980 is about 524.8086740477.

The spelling of 144544980 in words is "one hundred forty-four million, five hundred forty-four thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 191 382 573 764 955 1146 1910 2292 2865 3820 5730 11460 12613 25226 37839 50452 63065 75678 126130 151356 189195 252260 378390 756780 2409083 4818166 7227249 9636332 12045415 14454498 24090830 28908996 36136245 48181660 72272490 144544980