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71041369 = 737594649
BaseRepresentation
bin1000011110000…
…00000101011001
311221200021102211
410033000011121
5121141310434
611014355121
71521561460
oct417000531
9157607384
1071041369
1137112483
121b95baa1
1311944819
1496139d7
156384464
hex43c0159

71041369 has 16 divisors (see below), whose sum is σ = 84816000. Its totient is φ = 58230144.

The previous prime is 71041363. The next prime is 71041381. The reversal of 71041369 is 96314017.

It is a happy number.

It is not a de Polignac number, because 71041369 - 29 = 71040857 is a prime.

It is a super-2 number, since 2×710413692 = 10093752218788322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71041369.

It is not an unprimeable number, because it can be changed into a prime (71041363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12957 + ... + 17605.

It is an arithmetic number, because the mean of its divisors is an integer number (5301000).

Almost surely, 271041369 is an apocalyptic number.

It is an amenable number.

71041369 is a deficient number, since it is larger than the sum of its proper divisors (13774631).

71041369 is a wasteful number, since it uses less digits than its factorization.

71041369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4752.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 71041369 is about 8428.6042142219. The cubic root of 71041369 is about 414.1621825620.

The spelling of 71041369 in words is "seventy-one million, forty-one thousand, three hundred sixty-nine".

Divisors: 1 7 37 59 259 413 2183 4649 15281 32543 172013 274291 1204091 1920037 10148767 71041369