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12957360 = 2435134153
BaseRepresentation
bin110001011011…
…011010110000
3220101022011020
4301123122300
511304113420
61141415440
7215064363
oct61333260
926338136
1012957360
117350069
12440a580
1328b89a0
141a140da
15120e340
hexc5b6b0

12957360 has 80 divisors (see below), whose sum is σ = 43268064. Its totient is φ = 3188736.

The previous prime is 12957337. The next prime is 12957361. The reversal of 12957360 is 6375921.

12957360 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 tau number, because it is divible by the number of its divisors (80).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (12957361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1044 + ... + 5196.

Almost surely, 212957360 is an apocalyptic number.

12957360 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 12957360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21634032).

12957360 is an abundant number, since it is smaller than the sum of its proper divisors (30310704).

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

12957360 is a wasteful number, since it uses less digits than its factorization.

12957360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4182 (or 4176 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 12957360 is about 3599.6333146586. The cubic root of 12957360 is about 234.8761079263.

The spelling of 12957360 in words is "twelve million, nine hundred fifty-seven thousand, three hundred sixty".

Divisors: 1 2 3 4 5 6 8 10 12 13 15 16 20 24 26 30 39 40 48 52 60 65 78 80 104 120 130 156 195 208 240 260 312 390 520 624 780 1040 1560 3120 4153 8306 12459 16612 20765 24918 33224 41530 49836 53989 62295 66448 83060 99672 107978 124590 161967 166120 199344 215956 249180 269945 323934 332240 431912 498360 539890 647868 809835 863824 996720 1079780 1295736 1619670 2159560 2591472 3239340 4319120 6478680 12957360