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8117071 = 29319029
BaseRepresentation
bin11110111101101101001111
3120021101112021
4132331231033
54034221241
6445551011
7125664634
oct36755517
916241467
108117071
114644526
122875467
1318b2801
14111418b
15aa50d1
hex7bdb4f

8117071 has 8 divisors (see below), whose sum is σ = 8668800. Its totient is φ = 7583520.

The previous prime is 8117069. The next prime is 8117077. The reversal of 8117071 is 1707118.

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 8117071 - 21 = 8117069 is a prime.

It is a Duffinian number.

8117071 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8117077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3616 + ... + 5413.

It is an arithmetic number, because the mean of its divisors is an integer number (1083600).

Almost surely, 28117071 is an apocalyptic number.

8117071 is a deficient number, since it is larger than the sum of its proper divisors (551729).

8117071 is a wasteful number, since it uses less digits than its factorization.

8117071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9089.

The product of its (nonzero) digits is 392, while the sum is 25.

The square root of 8117071 is about 2849.0473846533. The cubic root of 8117071 is about 200.9708710872.

The spelling of 8117071 in words is "eight million, one hundred seventeen thousand, seventy-one".

Divisors: 1 29 31 899 9029 261841 279899 8117071