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12222369 = 322946829
BaseRepresentation
bin101110100111…
…111110100001
3211222221221100
4232213332201
511112103434
61113545013
7205613505
oct56477641
924887840
1012222369
116998935
124115169
1326bc293
1418a2305
151116699
hexba7fa1

12222369 has 12 divisors (see below), whose sum is σ = 18263700. Its totient is φ = 7867104.

The previous prime is 12222367. The next prime is 12222389. The reversal of 12222369 is 96322221.

It can be written as a sum of positive squares in 2 ways, for example, as 3294225 + 8928144 = 1815^2 + 2988^2 .

It is not a de Polignac number, because 12222369 - 21 = 12222367 is a prime.

It is a super-2 number, since 2×122223692 = 298772607944322, which contains 22 as substring.

It is a plaindrome in base 10 and base 15.

It is a zygodrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (12222367) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23154 + ... + 23675.

It is an arithmetic number, because the mean of its divisors is an integer number (1521975).

Almost surely, 212222369 is an apocalyptic number.

It is an amenable number.

12222369 is a deficient number, since it is larger than the sum of its proper divisors (6041331).

12222369 is a wasteful number, since it uses less digits than its factorization.

12222369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46864 (or 46861 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 12222369 is about 3496.0504859055. The cubic root of 12222369 is about 230.3483630845.

The spelling of 12222369 in words is "twelve million, two hundred twenty-two thousand, three hundred sixty-nine".

Divisors: 1 3 9 29 87 261 46829 140487 421461 1358041 4074123 12222369