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12372823 = 67184669
BaseRepresentation
bin101111001100…
…101101010111
3212021121022201
4233030231113
511131412243
61121105331
7210111241
oct57145527
925247281
1012372823
116a90981
124188247
1327428c8
141901091
15114604d
hexbccb57

12372823 has 4 divisors (see below), whose sum is σ = 12557560. Its totient is φ = 12188088.

The previous prime is 12372817. The next prime is 12372859. The reversal of 12372823 is 32827321.

12372823 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32827321 = 38984389.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12372823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12372791 and 12372800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12372223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92268 + ... + 92401.

It is an arithmetic number, because the mean of its divisors is an integer number (3139390).

Almost surely, 212372823 is an apocalyptic number.

12372823 is a deficient number, since it is larger than the sum of its proper divisors (184737).

12372823 is an equidigital number, since it uses as much as digits as its factorization.

12372823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184736.

The product of its digits is 4032, while the sum is 28.

The square root of 12372823 is about 3517.5023809516. The cubic root of 12372823 is about 231.2896861034.

The spelling of 12372823 in words is "twelve million, three hundred seventy-two thousand, eight hundred twenty-three".

Divisors: 1 67 184669 12372823