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12738292 = 2272811619
BaseRepresentation
bin110000100101…
…111011110100
3212222011122121
4300211323310
511230111132
61133005324
7213162610
oct60457364
925864577
1012738292
117210516
124323844
132840068
141998340
1511b9497
hexc25ef4

12738292 has 24 divisors (see below), whose sum is σ = 25583040. Its totient is φ = 5436480.

The previous prime is 12738289. The next prime is 12738293. The reversal of 12738292 is 29283721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12738293) 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 7 ways as a sum of consecutive naturals, for example, 7059 + ... + 8677.

It is an arithmetic number, because the mean of its divisors is an integer number (1065960).

Almost surely, 212738292 is an apocalyptic number.

It is an amenable number.

12738292 is an abundant number, since it is smaller than the sum of its proper divisors (12844748).

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

12738292 is a wasteful number, since it uses less digits than its factorization.

12738292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911 (or 1909 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 12738292 is about 3569.0743898103. The cubic root of 12738292 is about 233.5449065124.

The spelling of 12738292 in words is "twelve million, seven hundred thirty-eight thousand, two hundred ninety-two".

Divisors: 1 2 4 7 14 28 281 562 1124 1619 1967 3238 3934 6476 7868 11333 22666 45332 454939 909878 1819756 3184573 6369146 12738292