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12872755 = 572315991
BaseRepresentation
bin110001000110…
…110000110011
3220020000002201
4301012300303
511243412010
61135524031
7214262620
oct61066063
926200081
1012872755
1172a2545
124389617
13288931c
1419d1347
1511e423a
hexc46c33

12872755 has 16 divisors (see below), whose sum is σ = 18422784. Its totient is φ = 8442720.

The previous prime is 12872749. The next prime is 12872759. The reversal of 12872755 is 55727821.

It is not a de Polignac number, because 12872755 - 27 = 12872627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12872759) 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 15 ways as a sum of consecutive naturals, for example, 7191 + ... + 8800.

It is an arithmetic number, because the mean of its divisors is an integer number (1151424).

Almost surely, 212872755 is an apocalyptic number.

12872755 is a deficient number, since it is larger than the sum of its proper divisors (5550029).

12872755 is a wasteful number, since it uses less digits than its factorization.

12872755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16026.

The product of its digits is 39200, while the sum is 37.

The square root of 12872755 is about 3587.8621768401. The cubic root of 12872755 is about 234.3637838781.

The spelling of 12872755 in words is "twelve million, eight hundred seventy-two thousand, seven hundred fifty-five".

Divisors: 1 5 7 23 35 115 161 805 15991 79955 111937 367793 559685 1838965 2574551 12872755