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68112271 = 2913117929
BaseRepresentation
bin1000000111101…
…00111110001111
311202011110110201
410003310332033
5114414043041
610431514331
71454642023
oct403647617
9152143421
1068112271
11354a1837
121a9889a7
131115a526
149090383
155ea6631
hex40f4f8f

68112271 has 8 divisors (see below), whose sum is σ = 71002800. Its totient is φ = 65257920.

The previous prime is 68112257. The next prime is 68112377. The reversal of 68112271 is 17221186.

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 68112271 - 29 = 68111759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68112211) 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, 5166 + ... + 12763.

It is an arithmetic number, because the mean of its divisors is an integer number (8875350).

Almost surely, 268112271 is an apocalyptic number.

68112271 is a deficient number, since it is larger than the sum of its proper divisors (2890529).

68112271 is a wasteful number, since it uses less digits than its factorization.

68112271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18089.

The product of its digits is 1344, while the sum is 28.

The square root of 68112271 is about 8253.0158730006. The cubic root of 68112271 is about 408.3900197668.

The spelling of 68112271 in words is "sixty-eight million, one hundred twelve thousand, two hundred seventy-one".

Divisors: 1 29 131 3799 17929 519941 2348699 68112271