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12211900260 = 2235729075953
BaseRepresentation
bin10110101111110001…
…01100111101100100
31011112001211210212020
423113320230331210
5200002221302020
65335435223140
7611423303520
oct132770547544
934461753766
1012211900260
1151a733245a
1224498a7ab0
1311c80275b1
1483bc1ad80
154b717ac40
hex2d7e2cf64

12211900260 has 48 divisors (see below), whose sum is σ = 39078082176. Its totient is φ = 2791291392.

The previous prime is 12211900247. The next prime is 12211900271. The reversal of 12211900260 is 6200911221.

It is a self number, because there is not a number n which added to its sum of digits gives 12211900260.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14537557 + ... + 14538396.

It is an arithmetic number, because the mean of its divisors is an integer number (814126712).

Almost surely, 212211900260 is an apocalyptic number.

12211900260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211900260 is an abundant number, since it is smaller than the sum of its proper divisors (26866181916).

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

12211900260 is a wasteful number, since it uses less digits than its factorization.

12211900260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29075972 (or 29075970 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The spelling of 12211900260 in words is "twelve billion, two hundred eleven million, nine hundred thousand, two hundred sixty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 420 29075953 58151906 87227859 116303812 145379765 174455718 203531671 290759530 348911436 407063342 436139295 581519060 610595013 814126684 872278590 1017658355 1221190026 1744557180 2035316710 2442380052 3052975065 4070633420 6105950130 12211900260