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12274431 = 313347907
BaseRepresentation
bin101110110100…
…101011111111
3212002121100120
4232310223333
511120240211
61115030023
7206221341
oct56645377
925077316
1012274431
116a23a64
12413b313
132709ba0
1418b7291
151126d06
hexbb4aff

12274431 has 16 divisors (see below), whose sum is σ = 17695104. Its totient is φ = 7523424.

The previous prime is 12274421. The next prime is 12274447. The reversal of 12274431 is 13447221.

It is a happy number.

12274431 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12274431 - 27 = 12274303 is a prime.

It is a super-2 number, since 2×122744312 = 301323312747522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12274421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13080 + ... + 13986.

It is an arithmetic number, because the mean of its divisors is an integer number (1105944).

Almost surely, 212274431 is an apocalyptic number.

12274431 is a deficient number, since it is larger than the sum of its proper divisors (5420673).

12274431 is a wasteful number, since it uses less digits than its factorization.

12274431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270.

The product of its digits is 1344, while the sum is 24.

The square root of 12274431 is about 3503.4884044335. The cubic root of 12274431 is about 230.6749612311.

The spelling of 12274431 in words is "twelve million, two hundred seventy-four thousand, four hundred thirty-one".

Divisors: 1 3 13 39 347 907 1041 2721 4511 11791 13533 35373 314729 944187 4091477 12274431