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144725812 = 227211193533
BaseRepresentation
bin10001010000001…
…01011100110100
3101002022211111021
420220011130310
5244022211222
622205550524
73405102100
oct1050053464
9332284437
10144725812
117476a710
1240575444
1323ca339a
1415314900
15ca8bac7
hex8a05734

144725812 has 72 divisors (see below), whose sum is σ = 338415840. Its totient is φ = 53403840.

The previous prime is 144725803. The next prime is 144725813. The reversal of 144725812 is 218527441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144725813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39198 + ... + 42730.

It is an arithmetic number, because the mean of its divisors is an integer number (4700220).

Almost surely, 2144725812 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 144725812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169207920).

144725812 is an abundant number, since it is smaller than the sum of its proper divisors (193690028).

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

144725812 is a wasteful number, since it uses less digits than its factorization.

144725812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3581 (or 3572 counting only the distinct ones).

The product of its digits is 17920, while the sum is 34.

The square root of 144725812 is about 12030.2041545437. The cubic root of 144725812 is about 525.0274356033.

The spelling of 144725812 in words is "one hundred forty-four million, seven hundred twenty-five thousand, eight hundred twelve".

Divisors: 1 2 4 7 11 14 19 22 28 38 44 49 76 77 98 133 154 196 209 266 308 418 532 539 836 931 1078 1463 1862 2156 2926 3533 3724 5852 7066 10241 14132 20482 24731 38863 40964 49462 67127 77726 98924 134254 155452 173117 268508 272041 346234 469889 544082 692468 738397 939778 1088164 1476794 1879556 1904287 2953588 3289223 3808574 5168779 6578446 7617148 10337558 13156892 20675116 36181453 72362906 144725812