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12831020292 = 2233892748719
BaseRepresentation
bin10111111001100100…
…11101010100000100
31020010012211100212210
423330302131110010
5202234220122132
65521113143420
7632651605266
oct137462352404
936105740783
1012831020292
11549485a502
1225a10bab70
131296388bcc
1489a13db36
155016c3bcc
hex2fcc9d504

12831020292 has 24 divisors (see below), whose sum is σ = 30016022400. Its totient is φ = 4266010336.

The previous prime is 12831020291. The next prime is 12831020297. The reversal of 12831020292 is 29202013821.

12831020292 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12831020291) 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 7 ways as a sum of consecutive naturals, for example, 1369692 + ... + 1379027.

It is an arithmetic number, because the mean of its divisors is an integer number (1250667600).

Almost surely, 212831020292 is an apocalyptic number.

12831020292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12831020292 is an abundant number, since it is smaller than the sum of its proper divisors (17185002108).

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

12831020292 is a wasteful number, since it uses less digits than its factorization.

12831020292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2749115 (or 2749113 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The spelling of 12831020292 in words is "twelve billion, eight hundred thirty-one million, twenty thousand, two hundred ninety-two".

Divisors: 1 2 3 4 6 12 389 778 1167 1556 2334 4668 2748719 5497438 8246157 10994876 16492314 32984628 1069251691 2138503382 3207755073 4277006764 6415510146 12831020292