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12239560 = 235674567
BaseRepresentation
bin101110101100…
…001011001000
3212000211112001
4232230023020
511113131220
61114200344
7206014564
oct56541310
925024461
1012239560
1169aa843
1241230b4
1326c7058
1418a86a4
15111b80a
hexbac2c8

12239560 has 32 divisors (see below), whose sum is σ = 27956160. Its totient is φ = 4821696.

The previous prime is 12239543. The next prime is 12239561. The reversal of 12239560 is 6593221.

It is not an unprimeable number, because it can be changed into a prime (12239561) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 397 + ... + 4963.

It is an arithmetic number, because the mean of its divisors is an integer number (873630).

Almost surely, 212239560 is an apocalyptic number.

12239560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12239560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13978080).

12239560 is an abundant number, since it is smaller than the sum of its proper divisors (15716600).

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

12239560 is a wasteful number, since it uses less digits than its factorization.

12239560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4645 (or 4641 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 12239560 is about 3498.5082535275. The cubic root of 12239560 is about 230.4563089770.

The spelling of 12239560 in words is "twelve million, two hundred thirty-nine thousand, five hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 67 134 268 335 536 670 1340 2680 4567 9134 18268 22835 36536 45670 91340 182680 305989 611978 1223956 1529945 2447912 3059890 6119780 12239560