Search a number
-
+
71353568 = 25111331503
BaseRepresentation
bin1000100000011…
…00010011100000
311222021010200202
410100030103200
5121231303233
611025204332
71524331616
oct420142340
9158233622
1071353568
1137305aa0
121ba906a8
1311a23960
1496956b6
1563e6be8
hex440c4e0

71353568 has 96 divisors (see below), whose sum is σ = 170698752. Its totient is φ = 28915200.

The previous prime is 71353561. The next prime is 71353577. The reversal of 71353568 is 86535317.

Its product of digits (75600) is a multiple of the sum of its prime divisors (560).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71353561) 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, 141605 + ... + 142107.

It is an arithmetic number, because the mean of its divisors is an integer number (1778112).

Almost surely, 271353568 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 71353568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85349376).

71353568 is an abundant number, since it is smaller than the sum of its proper divisors (99345184).

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

71353568 is a wasteful number, since it uses less digits than its factorization.

71353568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568 (or 560 counting only the distinct ones).

The product of its digits is 75600, while the sum is 38.

The square root of 71353568 is about 8447.1041191642. The cubic root of 71353568 is about 414.7679895400.

It can be divided in two parts, 7135 and 3568, that multiplied together give a triangular number (25457680 = T7135).

The spelling of 71353568 in words is "seventy-one million, three hundred fifty-three thousand, five hundred sixty-eight".

Divisors: 1 2 4 8 11 13 16 22 26 31 32 44 52 62 88 104 124 143 176 208 248 286 341 352 403 416 496 503 572 682 806 992 1006 1144 1364 1612 2012 2288 2728 3224 4024 4433 4576 5456 5533 6448 6539 8048 8866 10912 11066 12896 13078 15593 16096 17732 22132 26156 31186 35464 44264 52312 62372 70928 71929 88528 104624 124744 141856 143858 171523 177056 202709 209248 249488 287716 343046 405418 498976 575432 686092 810836 1150864 1372184 1621672 2229799 2301728 2744368 3243344 4459598 5488736 6486688 8919196 17838392 35676784 71353568