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71480041 = 293766617
BaseRepresentation
bin1000100001010…
…11001011101001
311222111120011221
410100223023221
5121244330131
611032022041
71525366423
oct420531351
9158446157
1071480041
1137392016
121bb31921
1311a693a9
1496c9813
15641e411
hex442b2e9

71480041 has 8 divisors (see below), whose sum is σ = 75944520. Its totient is φ = 67148928.

The previous prime is 71480039. The next prime is 71480051. The reversal of 71480041 is 14008417.

It can be written as a sum of positive squares in 4 ways, for example, as 4305625 + 67174416 = 2075^2 + 8196^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71480041 - 21 = 71480039 is a prime.

It is a super-2 number, since 2×714800412 = 10218792522723362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71479988 and 71480015.

It is not an unprimeable number, because it can be changed into a prime (71480011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32236 + ... + 34381.

It is an arithmetic number, because the mean of its divisors is an integer number (9493065).

Almost surely, 271480041 is an apocalyptic number.

It is an amenable number.

71480041 is a deficient number, since it is larger than the sum of its proper divisors (4464479).

71480041 is a wasteful number, since it uses less digits than its factorization.

71480041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66683.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 71480041 is about 8454.5869798589. The cubic root of 71480041 is about 415.0129013263.

Adding to 71480041 its reverse (14008417), we get a palindrome (85488458).

The spelling of 71480041 in words is "seventy-one million, four hundred eighty thousand, forty-one".

Divisors: 1 29 37 1073 66617 1931893 2464829 71480041