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13784980 = 2251162659
BaseRepresentation
bin110100100101…
…011110010100
3221221100102211
4310211132110
512012104410
61211243204
7225112306
oct64453624
927840384
1013784980
117865950
124749504
132b185c1
141b8b976
15132468a
hexd25794

13784980 has 24 divisors (see below), whose sum is σ = 31580640. Its totient is φ = 5012640.

The previous prime is 13784971. The next prime is 13785001. The reversal of 13784980 is 8948731.

13784980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31110 + ... + 31549.

It is an arithmetic number, because the mean of its divisors is an integer number (1315860).

Almost surely, 213784980 is an apocalyptic number.

13784980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13784980 is an abundant number, since it is smaller than the sum of its proper divisors (17795660).

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

13784980 is a wasteful number, since it uses less digits than its factorization.

13784980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62679 (or 62677 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 13784980 is about 3712.8129497727. The cubic root of 13784980 is about 239.7739770217.

The spelling of 13784980 in words is "thirteen million, seven hundred eighty-four thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 62659 125318 250636 313295 626590 689249 1253180 1378498 2756996 3446245 6892490 13784980