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12280298321 = 471223213641
BaseRepresentation
bin10110110111111011…
…00111101101010001
31011200211112210100202
423123331213231101
5200122224021241
65350321224545
7613213546004
oct133375475521
934624483322
1012280298321
1152319a9985
122468792155
131209254c15
14846d4353b
154bd18bd9b
hex2dbf67b51

12280298321 has 8 divisors (see below), whose sum is σ = 12551894784. Its totient is φ = 12009131680.

The previous prime is 12280298297. The next prime is 12280298323. The reversal of 12280298321 is 12389208221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-12280298321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12280298323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49340 + ... + 164301.

It is an arithmetic number, because the mean of its divisors is an integer number (1568986848).

Almost surely, 212280298321 is an apocalyptic number.

It is an amenable number.

12280298321 is a deficient number, since it is larger than the sum of its proper divisors (271596463).

12280298321 is a wasteful number, since it uses less digits than its factorization.

12280298321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214911.

The product of its (nonzero) digits is 27648, while the sum is 38.

The spelling of 12280298321 in words is "twelve billion, two hundred eighty million, two hundred ninety-eight thousand, three hundred twenty-one".

Divisors: 1 47 1223 57481 213641 10041127 261282943 12280298321