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12003980 = 2254114639
BaseRepresentation
bin101101110010…
…101010001100
3211120212100212
4231302222030
511033111410
61105141552
7204014012
oct55625214
924525325
1012003980
11685984a
12402a8b8
132643a61
1418468b2
1510c1b05
hexb72a8c

12003980 has 24 divisors (see below), whose sum is σ = 25824960. Its totient is φ = 4684160.

The previous prime is 12003977. The next prime is 12003997. The reversal of 12003980 is 8930021.

12003980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 6500 + ... + 8139.

It is an arithmetic number, because the mean of its divisors is an integer number (1076040).

Almost surely, 212003980 is an apocalyptic number.

12003980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12003980 is an abundant number, since it is smaller than the sum of its proper divisors (13820980).

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

12003980 is a wasteful number, since it uses less digits than its factorization.

12003980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14689 (or 14687 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 12003980 is about 3464.6760310309. The cubic root of 12003980 is about 228.9681566167.

The spelling of 12003980 in words is "twelve million, three thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 41 82 164 205 410 820 14639 29278 58556 73195 146390 292780 600199 1200398 2400796 3000995 6001990 12003980