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12307043868 = 2237146512427
BaseRepresentation
bin10110111011000111…
…01001011000011100
31011202200212121100120
423131203221120130
5200201100400433
65353114354540
7613660101240
oct133543513034
934680777316
1012307043868
115246007239
12247572ba50
13121195a7a2
1484a706420
154c06c17b3
hex2dd8e961c

12307043868 has 24 divisors (see below), whose sum is σ = 32818783872. Its totient is φ = 3516298224.

The previous prime is 12307043843. The next prime is 12307043887. The reversal of 12307043868 is 86834070321.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 73256130 + ... + 73256297.

It is an arithmetic number, because the mean of its divisors is an integer number (1367449328).

Almost surely, 212307043868 is an apocalyptic number.

It is an amenable number.

12307043868 is an abundant number, since it is smaller than the sum of its proper divisors (20511740004).

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

12307043868 is a wasteful number, since it uses less digits than its factorization.

12307043868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146512441 (or 146512439 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The spelling of 12307043868 in words is "twelve billion, three hundred seven million, forty-three thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 146512427 293024854 439537281 586049708 879074562 1025586989 1758149124 2051173978 3076760967 4102347956 6153521934 12307043868