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71001300 = 22352311761
BaseRepresentation
bin1000011101101…
…10010011010100
311221121020110210
410032312103110
5121134020200
611013445420
71521333606
oct416662324
9157536423
1071001300
1137095367
121b940870
131192c506
149603176
156377650
hex43b64d4

71001300 has 72 divisors (see below), whose sum is σ = 206361792. Its totient is φ = 18848000.

The previous prime is 71001269. The next prime is 71001311. The reversal of 71001300 is 310017.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 92920 + ... + 93680.

It is an arithmetic number, because the mean of its divisors is an integer number (2866136).

Almost surely, 271001300 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 71001300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103180896).

71001300 is an abundant number, since it is smaller than the sum of its proper divisors (135360492).

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

71001300 is a wasteful number, since it uses less digits than its factorization.

71001300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089 (or 1082 counting only the distinct ones).

The product of its (nonzero) digits is 21, while the sum is 12.

The square root of 71001300 is about 8426.2269136310. The cubic root of 71001300 is about 414.0843021865.

Adding to 71001300 its reverse (310017), we get a palindrome (71311317).

The spelling of 71001300 in words is "seventy-one million, one thousand, three hundred".

Divisors: 1 2 3 4 5 6 10 12 15 20 25 30 50 60 75 100 150 300 311 622 761 933 1244 1522 1555 1866 2283 3044 3110 3732 3805 4566 4665 6220 7610 7775 9132 9330 11415 15220 15550 18660 19025 22830 23325 31100 38050 45660 46650 57075 76100 93300 114150 228300 236671 473342 710013 946684 1183355 1420026 2366710 2840052 3550065 4733420 5916775 7100130 11833550 14200260 17750325 23667100 35500650 71001300