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71960448 = 2737191409
BaseRepresentation
bin1000100101000…
…00011110000000
312000101222011210
410102200132000
5121410213243
611050210120
71532440140
oct422403600
9160358153
1071960448
113768aa4a
1220123940
1311ba6c61
1497b2920
1564b6933
hex44a0780

71960448 has 128 divisors (see below), whose sum is σ = 230112000. Its totient is φ = 19464192.

The previous prime is 71960443. The next prime is 71960461. The reversal of 71960448 is 84406917.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71960443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50368 + ... + 51776.

It is an arithmetic number, because the mean of its divisors is an integer number (1797750).

Almost surely, 271960448 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 71960448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115056000).

71960448 is an abundant number, since it is smaller than the sum of its proper divisors (158151552).

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

71960448 is a wasteful number, since it uses less digits than its factorization.

71960448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452 (or 1440 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 71960448 is about 8482.9504301275. The cubic root of 71960448 is about 415.9405733652.

The spelling of 71960448 in words is "seventy-one million, nine hundred sixty thousand, four hundred forty-eight".

Divisors: 1 2 3 4 6 7 8 12 14 16 19 21 24 28 32 38 42 48 56 57 64 76 84 96 112 114 128 133 152 168 192 224 228 266 304 336 384 399 448 456 532 608 672 798 896 912 1064 1216 1344 1409 1596 1824 2128 2432 2688 2818 3192 3648 4227 4256 5636 6384 7296 8454 8512 9863 11272 12768 16908 17024 19726 22544 25536 26771 29589 33816 39452 45088 51072 53542 59178 67632 78904 80313 90176 107084 118356 135264 157808 160626 180352 187397 214168 236712 270528 315616 321252 374794 428336 473424 541056 562191 631232 642504 749588 856672 946848 1124382 1262464 1285008 1499176 1713344 1893696 2248764 2570016 2998352 3426688 3787392 4497528 5140032 5996704 8995056 10280064 11993408 17990112 23986816 35980224 71960448