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71434510 = 2571760029
BaseRepresentation
bin1000100001000…
…00000100001110
311222102020201121
410100200010032
5121241401020
611031031154
71525116610
oct420400416
9158366647
1071434510
1137360894
121bb0b4ba
1311a51754
1496b6db0
156410baa
hex442010e

71434510 has 32 divisors (see below), whose sum is σ = 155597760. Its totient is φ = 23050752.

The previous prime is 71434499. The next prime is 71434537. The reversal of 71434510 is 1543417.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28825 + ... + 31204.

It is an arithmetic number, because the mean of its divisors is an integer number (4862430).

Almost surely, 271434510 is an apocalyptic number.

71434510 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

71434510 is an abundant number, since it is smaller than the sum of its proper divisors (84163250).

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

71434510 is a wasteful number, since it uses less digits than its factorization.

71434510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60060.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 71434510 is about 8451.8938706068. The cubic root of 71434510 is about 414.9247649941.

Adding to 71434510 its reverse (1543417), we get a palindrome (72977927).

The spelling of 71434510 in words is "seventy-one million, four hundred thirty-four thousand, five hundred ten".

Divisors: 1 2 5 7 10 14 17 34 35 70 85 119 170 238 595 1190 60029 120058 300145 420203 600290 840406 1020493 2040986 2101015 4202030 5102465 7143451 10204930 14286902 35717255 71434510