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144542328 = 23374331987
BaseRepresentation
bin10001001110110…
…00101001111000
3101001222111210120
420213120221320
5244000323303
622202013240
73403406130
oct1047305170
9331874716
10144542328
1174654877
12404a7220
1323c3aa08
14152a7ac0
15ca52553
hex89d8a78

144542328 has 64 divisors (see below), whose sum is σ = 414140160. Its totient is φ = 41181696.

The previous prime is 144542323. The next prime is 144542339. The reversal of 144542328 is 823245441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144542323) by changing a digit.

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, 71751 + ... + 73737.

It is an arithmetic number, because the mean of its divisors is an integer number (6470940).

Almost surely, 2144542328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144542328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207070080).

144542328 is an abundant number, since it is smaller than the sum of its proper divisors (269597832).

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

144542328 is a wasteful number, since it uses less digits than its factorization.

144542328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2436 (or 2432 counting only the distinct ones).

The product of its digits is 30720, while the sum is 33.

The square root of 144542328 is about 12022.5757639534. The cubic root of 144542328 is about 524.8054644329.

Adding to 144542328 its reverse (823245441), we get a palindrome (967787769).

The spelling of 144542328 in words is "one hundred forty-four million, five hundred forty-two thousand, three hundred twenty-eight".

Divisors: 1 2 3 4 6 7 8 12 14 21 24 28 42 56 84 168 433 866 1299 1732 1987 2598 3031 3464 3974 5196 5961 6062 7948 9093 10392 11922 12124 13909 15896 18186 23844 24248 27818 36372 41727 47688 55636 72744 83454 111272 166908 333816 860371 1720742 2581113 3441484 5162226 6022597 6882968 10324452 12045194 18067791 20648904 24090388 36135582 48180776 72271164 144542328