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127956 = 22310663
BaseRepresentation
bin11111001111010100
320111112010
4133033110
513043311
62424220
71042023
oct371724
9214463
10127956
1188154
1262070
134631a
14348ba
1527da6
hex1f3d4

127956 has 12 divisors (see below), whose sum is σ = 298592. Its totient is φ = 42648.

The previous prime is 127951. The next prime is 127973. The reversal of 127956 is 659721.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127951) by changing a digit.

127956 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 5320 + ... + 5343.

2127956 is an apocalyptic number.

It is an amenable number.

127956 is an abundant number, since it is smaller than the sum of its proper divisors (170636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

127956 is a wasteful number, since it uses less digits than its factorization.

127956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10670 (or 10668 counting only the distinct ones).

The product of its digits is 3780, while the sum is 30.

The square root of 127956 is about 357.7093792452. The cubic root of 127956 is about 50.3910666958.

The spelling of 127956 in words is "one hundred twenty-seven thousand, nine hundred fifty-six".