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71200668 = 223711251307
BaseRepresentation
bin1000011111001…
…10111110011100
311221222100221210
410033212332130
5121211410133
611022024420
71523124060
oct417467634
9157870853
1071200668
1137211130
121ba18110
131199c196
149655aa0
1563b6763
hex43e6f9c

71200668 has 96 divisors (see below), whose sum is σ = 208631808. Its totient is φ = 18360000.

The previous prime is 71200667. The next prime is 71200673. The reversal of 71200668 is 86600217.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71200667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231771 + ... + 232077.

It is an arithmetic number, because the mean of its divisors is an integer number (2173248).

Almost surely, 271200668 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 71200668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104315904).

71200668 is an abundant number, since it is smaller than the sum of its proper divisors (137431140).

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

71200668 is a wasteful number, since it uses less digits than its factorization.

71200668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583 (or 581 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 71200668 is about 8438.0488265949. The cubic root of 71200668 is about 414.4715157974.

The spelling of 71200668 in words is "seventy-one million, two hundred thousand, six hundred sixty-eight".

Divisors: 1 2 3 4 6 7 11 12 14 21 22 28 33 42 44 66 77 84 132 154 231 251 307 308 462 502 614 753 921 924 1004 1228 1506 1757 1842 2149 2761 3012 3377 3514 3684 4298 5271 5522 6447 6754 7028 8283 8596 10131 10542 11044 12894 13508 16566 19327 20262 21084 23639 25788 33132 38654 40524 47278 57981 70917 77057 77308 94556 115962 141834 154114 231171 231924 283668 308228 462342 539399 847627 924684 1078798 1618197 1695254 2157596 2542881 3236394 3390508 5085762 5933389 6472788 10171524 11866778 17800167 23733556 35600334 71200668