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12807122 = 27190191
BaseRepresentation
bin110000110110…
…101111010010
3220002200001212
4300312233102
511234311442
61134300122
7213600356
oct60665722
926080055
1012807122
1172581a9
124357642
1328654a3
1419b5466
1511cea82
hexc36bd2

12807122 has 8 divisors (see below), whose sum is σ = 19481472. Its totient is φ = 6313300.

The previous prime is 12807107. The next prime is 12807127. The reversal of 12807122 is 22170821.

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

It is not an unprimeable number, because it can be changed into a prime (12807127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44954 + ... + 45237.

It is an arithmetic number, because the mean of its divisors is an integer number (2435184).

Almost surely, 212807122 is an apocalyptic number.

12807122 is a deficient number, since it is larger than the sum of its proper divisors (6674350).

12807122 is an equidigital number, since it uses as much as digits as its factorization.

12807122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90264.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 12807122 is about 3578.7039553447. The cubic root of 12807122 is about 233.9647961261.

Adding to 12807122 its reverse (22170821), we get a palindrome (34977943).

The spelling of 12807122 in words is "twelve million, eight hundred seven thousand, one hundred twenty-two".

Divisors: 1 2 71 142 90191 180382 6403561 12807122