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12229960 = 235305749
BaseRepresentation
bin101110101001…
…110101001000
3212000100100111
4232221311020
511112324320
61114044104
7205644601
oct56516510
925010314
1012229960
1169a3606
124119634
1326c2882
1418a4da8
151118a5a
hexba9d48

12229960 has 16 divisors (see below), whose sum is σ = 27517500. Its totient is φ = 4891968.

The previous prime is 12229927. The next prime is 12229961. The reversal of 12229960 is 6992221.

12229960 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11655396 + 574564 = 3414^2 + 758^2 .

It is not an unprimeable number, because it can be changed into a prime (12229961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152835 + ... + 152914.

Almost surely, 212229960 is an apocalyptic number.

12229960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12229960 is an abundant number, since it is smaller than the sum of its proper divisors (15287540).

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

12229960 is a wasteful number, since it uses less digits than its factorization.

12229960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305760 (or 305756 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 12229960 is about 3497.1359710483. The cubic root of 12229960 is about 230.3960410360.

The spelling of 12229960 in words is "twelve million, two hundred twenty-nine thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 305749 611498 1222996 1528745 2445992 3057490 6114980 12229960