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71029192 = 23131514523
BaseRepresentation
bin1000011101111…
…01000111001000
311221122122201211
410032331013020
5121140413232
611014222504
71521511123
oct416750710
9157578654
1071029192
1137104313
121b954a34
131193c110
14960d3ba
156380a47
hex43bd1c8

71029192 has 32 divisors (see below), whose sum is σ = 144406080. Its totient is φ = 32558400.

The previous prime is 71029187. The next prime is 71029223. The reversal of 71029192 is 29192017.

It is a super-2 number, since 2×710291922 = 10090292232345728, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 13443 + ... + 17965.

It is an arithmetic number, because the mean of its divisors is an integer number (4512690).

Almost surely, 271029192 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 71029192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72203040).

71029192 is an abundant number, since it is smaller than the sum of its proper divisors (73376888).

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

71029192 is a wasteful number, since it uses less digits than its factorization.

71029192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4693 (or 4689 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 71029192 is about 8427.8818216679. The cubic root of 71029192 is about 414.1385177540.

The spelling of 71029192 in words is "seventy-one million, twenty-nine thousand, one hundred ninety-two".

Divisors: 1 2 4 8 13 26 52 104 151 302 604 1208 1963 3926 4523 7852 9046 15704 18092 36184 58799 117598 235196 470392 682973 1365946 2731892 5463784 8878649 17757298 35514596 71029192