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12823228 = 2211291437
BaseRepresentation
bin110000111010…
…101010111100
3220010111011101
4300322222330
511240320403
61134502444
7213665335
oct60725274
926114141
1012823228
117269310
124364a24
13286c912
1419bb28c
1511d471d
hexc3aabc

12823228 has 12 divisors (see below), whose sum is σ = 24480792. Its totient is φ = 5828720.

The previous prime is 12823211. The next prime is 12823229. The reversal of 12823228 is 82232821.

It is a junction number, because it is equal to n+sod(n) for n = 12823196 and 12823205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12823229) 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, 145675 + ... + 145762.

It is an arithmetic number, because the mean of its divisors is an integer number (2040066).

Almost surely, 212823228 is an apocalyptic number.

It is an amenable number.

12823228 is a deficient number, since it is larger than the sum of its proper divisors (11657564).

12823228 is a wasteful number, since it uses less digits than its factorization.

12823228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291452 (or 291450 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 12823228 is about 3580.9535043058. The cubic root of 12823228 is about 234.0628316433.

The spelling of 12823228 in words is "twelve million, eight hundred twenty-three thousand, two hundred twenty-eight".

Divisors: 1 2 4 11 22 44 291437 582874 1165748 3205807 6411614 12823228