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12316865 = 511239937
BaseRepresentation
bin101110111111…
…000011000001
3212011202120012
4232333003001
511123114430
61115554305
7206456141
oct56770301
925152505
1012316865
116a52930
12415b995
1327232b2
1418c8921
151134695
hexbbf0c1

12316865 has 16 divisors (see below), whose sum is σ = 16208640. Its totient is φ = 8910720.

The previous prime is 12316861. The next prime is 12316873. The reversal of 12316865 is 56861321.

It is a happy number.

It is not a de Polignac number, because 12316865 - 22 = 12316861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12316861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12677 + ... + 13613.

It is an arithmetic number, because the mean of its divisors is an integer number (1013040).

Almost surely, 212316865 is an apocalyptic number.

It is an amenable number.

12316865 is a deficient number, since it is larger than the sum of its proper divisors (3891775).

12316865 is a wasteful number, since it uses less digits than its factorization.

12316865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192.

The product of its digits is 8640, while the sum is 32.

The square root of 12316865 is about 3509.5391435344. The cubic root of 12316865 is about 230.9404780333.

The spelling of 12316865 in words is "twelve million, three hundred sixteen thousand, eight hundred sixty-five".

Divisors: 1 5 11 55 239 937 1195 2629 4685 10307 13145 51535 223943 1119715 2463373 12316865