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127897 = 7112151
BaseRepresentation
bin11111001110011001
320111102221
4133032121
513043042
62424041
71041610
oct371631
9214387
10127897
1188100
1262021
13462a3
1434877
1527d67
hex1f399

127897 has 12 divisors (see below), whose sum is σ = 161728. Its totient is φ = 99000.

The previous prime is 127877. The next prime is 127913. The reversal of 127897 is 798721.

It is a de Polignac number, because none of the positive numbers 2k-127897 is a prime.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 772 + ... + 922.

2127897 is an apocalyptic number.

It is an amenable number.

127897 is a deficient number, since it is larger than the sum of its proper divisors (33831).

127897 is a wasteful number, since it uses less digits than its factorization.

127897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 169 counting only the distinct ones).

The product of its digits is 7056, while the sum is 34.

The square root of 127897 is about 357.6269005542. The cubic root of 127897 is about 50.3833204653.

It can be divided in two parts, 127 and 897, that added together give a 10-th power (1024 = 210).

The spelling of 127897 in words is "one hundred twenty-seven thousand, eight hundred ninety-seven".

Divisors: 1 7 11 77 121 151 847 1057 1661 11627 18271 127897