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12228970 = 2513194951
BaseRepresentation
bin101110101001…
…100101101010
3212000021222211
4232221211222
511112311340
61114035334
7205641655
oct56514552
925007884
1012228970
1169a2896
124118b4a
1326c22a0
1418a489c
1511185ea
hexba996a

12228970 has 32 divisors (see below), whose sum is σ = 24958080. Its totient is φ = 4276800.

The previous prime is 12228929. The next prime is 12228991. The reversal of 12228970 is 7982221.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6 + ... + 4945.

It is an arithmetic number, because the mean of its divisors is an integer number (779940).

Almost surely, 212228970 is an apocalyptic number.

12228970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12228970 is an abundant number, since it is smaller than the sum of its proper divisors (12729110).

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

12228970 is a wasteful number, since it uses less digits than its factorization.

12228970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4990.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 12228970 is about 3496.9944237874. The cubic root of 12228970 is about 230.3898241109.

It can be divided in two parts, 122 and 28970, that added together give a palindrome (29092).

The spelling of 12228970 in words is "twelve million, two hundred twenty-eight thousand, nine hundred seventy".

Divisors: 1 2 5 10 13 19 26 38 65 95 130 190 247 494 1235 2470 4951 9902 24755 49510 64363 94069 128726 188138 321815 470345 643630 940690 1222897 2445794 6114485 12228970