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12926228 = 2272915919
BaseRepresentation
bin110001010011…
…110100010100
3220022201110012
4301103310110
511302114403
61141015352
7214604540
oct61236424
926281405
1012926228
117329737
1243b4558
1328a7773
141a06a20
151204ed8
hexc53d14

12926228 has 24 divisors (see below), whose sum is σ = 26745600. Its totient is φ = 5348448.

The previous prime is 12926227. The next prime is 12926231. The reversal of 12926228 is 82262921.

It is a super-3 number, since 3×129262283 (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12926194 and 12926203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12926227) 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 7 ways as a sum of consecutive naturals, for example, 7148 + ... + 8771.

It is an arithmetic number, because the mean of its divisors is an integer number (1114400).

Almost surely, 212926228 is an apocalyptic number.

It is an amenable number.

12926228 is an abundant number, since it is smaller than the sum of its proper divisors (13819372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12926228 is a wasteful number, since it uses less digits than its factorization.

12926228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15959 (or 15957 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 12926228 is about 3595.3063847188. The cubic root of 12926228 is about 234.6878487178.

The spelling of 12926228 in words is "twelve million, nine hundred twenty-six thousand, two hundred twenty-eight".

Divisors: 1 2 4 7 14 28 29 58 116 203 406 812 15919 31838 63676 111433 222866 445732 461651 923302 1846604 3231557 6463114 12926228