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71102330 = 25131732173
BaseRepresentation
bin1000011110011…
…10111101111010
311221210101001122
410033032331322
5121200233310
611015545242
71522234265
oct417167572
9157711048
1071102330
1137154262
121b98b222
13119664b0
14962bcdc
156397555
hex43cef7a

71102330 has 32 divisors (see below), whose sum is σ = 145941264. Its totient is φ = 24708096.

The previous prime is 71102327. The next prime is 71102333. The reversal of 71102330 is 3320117.

It is an interprime number because it is at equal distance from previous prime (71102327) and next prime (71102333).

It can be written as a sum of positive squares in 8 ways, for example, as 23726641 + 47375689 = 4871^2 + 6883^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 71102299 and 71102308.

It is not an unprimeable number, because it can be changed into a prime (71102333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13877 + ... + 18296.

Almost surely, 271102330 is an apocalyptic number.

71102330 is an abundant number, since it is smaller than the sum of its proper divisors (74838934).

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

71102330 is a wasteful number, since it uses less digits than its factorization.

71102330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32210.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 71102330 is about 8432.2197552009. The cubic root of 71102330 is about 414.2806136624.

Adding to 71102330 its reverse (3320117), we get a palindrome (74422447).

The spelling of 71102330 in words is "seventy-one million, one hundred two thousand, three hundred thirty".

Divisors: 1 2 5 10 13 17 26 34 65 85 130 170 221 442 1105 2210 32173 64346 160865 321730 418249 546941 836498 1093882 2091245 2734705 4182490 5469410 7110233 14220466 35551165 71102330