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12385120 = 2551131227
BaseRepresentation
bin101111001111…
…101101100000
3212022020012011
4233033231200
511132310440
61121242304
7210162136
oct57175540
925266164
1012385120
116a9a140
124193394
132748397
141905756
1511499ea
hexbcfb60

12385120 has 96 divisors (see below), whose sum is σ = 33094656. Its totient is φ = 4339200.

The previous prime is 12385081. The next prime is 12385159. The reversal of 12385120 is 2158321.

It is an interprime number because it is at equal distance from previous prime (12385081) and next prime (12385159).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 12385091 and 12385100.

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, 54447 + ... + 54673.

It is an arithmetic number, because the mean of its divisors is an integer number (344736).

Almost surely, 212385120 is an apocalyptic number.

12385120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12385120 is the 1760-th decagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12385120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16547328).

12385120 is an abundant number, since it is smaller than the sum of its proper divisors (20709536).

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

12385120 is a wasteful number, since it uses less digits than its factorization.

12385120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 12385120 is about 3519.2499200824. The cubic root of 12385120 is about 231.3662848323.

The spelling of 12385120 in words is "twelve million, three hundred eighty-five thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 11 16 20 22 31 32 40 44 55 62 80 88 110 124 155 160 176 220 227 248 310 341 352 440 454 496 620 682 880 908 992 1135 1240 1364 1705 1760 1816 2270 2480 2497 2728 3410 3632 4540 4960 4994 5456 6820 7037 7264 9080 9988 10912 12485 13640 14074 18160 19976 24970 27280 28148 35185 36320 39952 49940 54560 56296 70370 77407 79904 99880 112592 140740 154814 199760 225184 281480 309628 387035 399520 562960 619256 774070 1125920 1238512 1548140 2477024 3096280 6192560 12385120