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127872923 = 3113730109
BaseRepresentation
bin1111001111100…
…10111110011011
322220121121200012
413213302332123
5230213413143
620404432135
73111621233
oct747627633
9286547605
10127872923
11661a9902
12369a864b
1320652569
1412da8cc3
15b35d418
hex79f2f9b

127872923 has 8 divisors (see below), whose sum is σ = 132965760. Its totient is φ = 122840640.

The previous prime is 127872881. The next prime is 127872931. The reversal of 127872923 is 329278721.

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 127872923 - 212 = 127868827 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127872023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10808 + ... + 19301.

It is an arithmetic number, because the mean of its divisors is an integer number (16620720).

Almost surely, 2127872923 is an apocalyptic number.

127872923 is a deficient number, since it is larger than the sum of its proper divisors (5092837).

127872923 is a wasteful number, since it uses less digits than its factorization.

127872923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30277.

The product of its digits is 84672, while the sum is 41.

The square root of 127872923 is about 11308.0910413739. The cubic root of 127872923 is about 503.8015866239.

The spelling of 127872923 in words is "one hundred twenty-seven million, eight hundred seventy-two thousand, nine hundred twenty-three".

Divisors: 1 31 137 4247 30109 933379 4124933 127872923