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12804460 = 225640223
BaseRepresentation
bin110000110110…
…000101101100
3220002112102021
4300312011230
511234220320
61134235524
7213556534
oct60660554
926075367
1012804460
1172561a9
124355ba4
132864206
1419b44c4
1511cddaa
hexc3616c

12804460 has 12 divisors (see below), whose sum is σ = 26889408. Its totient is φ = 5121776.

The previous prime is 12804443. The next prime is 12804481. The reversal of 12804460 is 6440821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320092 + ... + 320131.

It is an arithmetic number, because the mean of its divisors is an integer number (2240784).

Almost surely, 212804460 is an apocalyptic number.

12804460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12804460 is an abundant number, since it is smaller than the sum of its proper divisors (14084948).

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

12804460 is a wasteful number, since it uses less digits than its factorization.

12804460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640232 (or 640230 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 12804460 is about 3578.3320136622. The cubic root of 12804460 is about 233.9485849002.

The spelling of 12804460 in words is "twelve million, eight hundred four thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 640223 1280446 2560892 3201115 6402230 12804460