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BaseRepresentation
bin110001010100…
…100100000000
3220022212122020
4301110210000
511302214110
61141041440
7214616460
oct61244400
926285566
1012929280
117330a61
1243b6280
1328a8c80
141a07ba0
151205d70
hexc54900

12929280 has 288 divisors, whose sum is σ = 52195584. Its totient is φ = 2654208.

The previous prime is 12929251. The next prime is 12929303. The reversal of 12929280 is 8292921.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 349422 + ... + 349458.

Almost surely, 212929280 is an apocalyptic number.

12929280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12929280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26097792).

12929280 is an abundant number, since it is smaller than the sum of its proper divisors (39266304).

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

12929280 is a wasteful number, since it uses less digits than its factorization.

12929280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 12929280 is about 3595.7308019372. The cubic root of 12929280 is about 234.7063179096.

The spelling of 12929280 in words is "twelve million, nine hundred twenty-nine thousand, two hundred eighty".