Search a number
-
+
71168800 = 2552175233
BaseRepresentation
bin1000011110111…
…11001100100000
311221220202020111
410033133030200
5121204400200
611021221104
71522632133
oct417371440
9157822214
1071168800
113719a19a
121ba01794
131198a821
14964821a
1563ac0ba
hex43df320

71168800 has 72 divisors (see below), whose sum is σ = 183996036. Its totient is φ = 26787840.

The previous prime is 71168759. The next prime is 71168833. The reversal of 71168800 is 886117.

It can be written as a sum of positive squares in 6 ways, for example, as 55771024 + 15397776 = 7468^2 + 3924^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 10984 + ... + 16216.

Almost surely, 271168800 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 71168800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91998018).

71168800 is an abundant number, since it is smaller than the sum of its proper divisors (112827236).

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

71168800 is a wasteful number, since it uses less digits than its factorization.

71168800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5270 (or 5257 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 71168800 is about 8436.1602640064. The cubic root of 71168800 is about 414.4096701728.

The spelling of 71168800 in words is "seventy-one million, one hundred sixty-eight thousand, eight hundred".

Divisors: 1 2 4 5 8 10 16 17 20 25 32 34 40 50 68 80 85 100 136 160 170 200 272 340 400 425 544 680 800 850 1360 1700 2720 3400 5233 6800 10466 13600 20932 26165 41864 52330 83728 88961 104660 130825 167456 177922 209320 261650 355844 418640 444805 523300 711688 837280 889610 1046600 1423376 1779220 2093200 2224025 2846752 3558440 4186400 4448050 7116880 8896100 14233760 17792200 35584400 71168800