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12239880 = 2335101999
BaseRepresentation
bin101110101100…
…010000001000
3212000211221220
4232230100020
511113134010
61114202040
7206015532
oct56542010
925024856
1012239880
116a00004
124123320
1326c7243
1418a8852
15111b970
hexbac408

12239880 has 32 divisors (see below), whose sum is σ = 36720000. Its totient is φ = 3263936.

The previous prime is 12239869. The next prime is 12239897. The reversal of 12239880 is 8893221.

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, 50880 + ... + 51119.

It is an arithmetic number, because the mean of its divisors is an integer number (1147500).

Almost surely, 212239880 is an apocalyptic number.

12239880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12239880 is an abundant number, since it is smaller than the sum of its proper divisors (24480120).

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

12239880 is a wasteful number, since it uses less digits than its factorization.

12239880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102013 (or 102009 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 12239880 is about 3498.5539870066. The cubic root of 12239880 is about 230.4583173655.

The spelling of 12239880 in words is "twelve million, two hundred thirty-nine thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 101999 203998 305997 407996 509995 611994 815992 1019990 1223988 1529985 2039980 2447976 3059970 4079960 6119940 12239880