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71384269 = 1153122443
BaseRepresentation
bin1000100000100…
…11110011001101
311222022200210211
410100103303031
5121233244034
611030002421
71524520255
oct420236315
9158280724
1071384269
1137327070
121baa6411
1311a34918
1496a2965
156400d64
hex4413ccd

71384269 has 8 divisors (see below), whose sum is σ = 79343712. Its totient is φ = 63669840.

The previous prime is 71384237. The next prime is 71384293. The reversal of 71384269 is 96248317.

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 71384269 - 25 = 71384237 is a prime.

It is a super-2 number, since 2×713842692 = 10191427721328722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71384969) 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, 60639 + ... + 61804.

It is an arithmetic number, because the mean of its divisors is an integer number (9917964).

Almost surely, 271384269 is an apocalyptic number.

It is an amenable number.

71384269 is a deficient number, since it is larger than the sum of its proper divisors (7959443).

71384269 is a wasteful number, since it uses less digits than its factorization.

71384269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122507.

The product of its digits is 72576, while the sum is 40.

The square root of 71384269 is about 8448.9211737357. The cubic root of 71384269 is about 414.8274678372.

The spelling of 71384269 in words is "seventy-one million, three hundred eighty-four thousand, two hundred sixty-nine".

Divisors: 1 11 53 583 122443 1346873 6489479 71384269