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12187968 = 2631319257
BaseRepresentation
bin101110011111…
…100101000000
3211221012202020
4232133211000
511110003333
61113121440
7205411302
oct56374500
924835666
1012187968
116975001
1240b9280
1326a9720
141893972
15110b3b3
hexb9f940

12187968 has 112 divisors (see below), whose sum is σ = 36697920. Its totient is φ = 3538944.

The previous prime is 12187951. The next prime is 12188003. The reversal of 12187968 is 86978121.

12187968 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a zygodrome in base 5.

It is a congruent number.

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, 47296 + ... + 47552.

It is an arithmetic number, because the mean of its divisors is an integer number (327660).

Almost surely, 212187968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12187968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18348960).

12187968 is an abundant number, since it is smaller than the sum of its proper divisors (24509952).

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

12187968 is a wasteful number, since it uses less digits than its factorization.

12187968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 294 counting only the distinct ones).

The product of its digits is 48384, while the sum is 42.

The square root of 12187968 is about 3491.1270386510. The cubic root of 12187968 is about 230.1320476777.

The spelling of 12187968 in words is "twelve million, one hundred eighty-seven thousand, nine hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 13 16 19 24 26 32 38 39 48 52 57 64 76 78 96 104 114 152 156 192 208 228 247 257 304 312 416 456 494 514 608 624 741 771 832 912 988 1028 1216 1248 1482 1542 1824 1976 2056 2496 2964 3084 3341 3648 3952 4112 4883 5928 6168 6682 7904 8224 9766 10023 11856 12336 13364 14649 15808 16448 19532 20046 23712 24672 26728 29298 39064 40092 47424 49344 53456 58596 63479 78128 80184 106912 117192 126958 156256 160368 190437 213824 234384 253916 312512 320736 380874 468768 507832 641472 761748 937536 1015664 1523496 2031328 3046992 4062656 6093984 12187968