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12722127 = 311385519
BaseRepresentation
bin110000100001…
…111111001111
3212221100110220
4300201333033
511224102002
61132402423
7213064515
oct60417717
925840426
1012722127
1171aa360
124316413
1328358b2
1419924b5
1511b47bc
hexc21fcf

12722127 has 8 divisors (see below), whose sum is σ = 18504960. Its totient is φ = 7710360.

The previous prime is 12722123. The next prime is 12722131. The reversal of 12722127 is 72122721.

It is an interprime number because it is at equal distance from previous prime (12722123) and next prime (12722131).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12722127 - 22 = 12722123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12722097 and 12722106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12722123) 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, 192727 + ... + 192792.

It is an arithmetic number, because the mean of its divisors is an integer number (2313120).

Almost surely, 212722127 is an apocalyptic number.

12722127 is a deficient number, since it is larger than the sum of its proper divisors (5782833).

12722127 is a wasteful number, since it uses less digits than its factorization.

12722127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385533.

The product of its digits is 784, while the sum is 24.

The square root of 12722127 is about 3566.8090781537. The cubic root of 12722127 is about 233.4460745423.

Adding to 12722127 its reverse (72122721), we get a palindrome (84844848).

The spelling of 12722127 in words is "twelve million, seven hundred twenty-two thousand, one hundred twenty-seven".

Divisors: 1 3 11 33 385519 1156557 4240709 12722127