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12884071806 = 232773925979
BaseRepresentation
bin10111111111111001…
…10101010101111110
31020020220122122212200
423333330311111332
5202341310244211
65530250212330
7634164542364
oct137774652576
936226578780
1012884071806
1155117a4931
1225b6a240a6
1312a4372238
148a31cd634
155061a2b56
hex2fff3557e

12884071806 has 24 divisors (see below), whose sum is σ = 27951632280. Its totient is φ = 4289130096.

The previous prime is 12884071801. The next prime is 12884071807. The reversal of 12884071806 is 60817048821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12884071801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 449076 + ... + 476903.

It is an arithmetic number, because the mean of its divisors is an integer number (1164651345).

Almost surely, 212884071806 is an apocalyptic number.

12884071806 is an abundant number, since it is smaller than the sum of its proper divisors (15067560474).

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

12884071806 is a wasteful number, since it uses less digits than its factorization.

12884071806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926760 (or 926757 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The spelling of 12884071806 in words is "twelve billion, eight hundred eighty-four million, seventy-one thousand, eight hundred six".

Divisors: 1 2 3 6 9 18 773 1546 2319 4638 6957 13914 925979 1851958 2777937 5555874 8333811 16667622 715781767 1431563534 2147345301 4294690602 6442035903 12884071806