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12885918304 = 2573131931
BaseRepresentation
bin11000000000000111…
…11000001001100000
31020021001010110210111
430000003320021200
5202342243341204
65530353541104
7634216332640
oct140003701140
936231113714
1012885918304
115512846166
1225b7574794
1312a486a83c
148a3550520
15506419d04
hex3000f8260

12885918304 has 96 divisors (see below), whose sum is σ = 29975242752. Its totient is φ = 5341622400.

The previous prime is 12885918293. The next prime is 12885918307. The reversal of 12885918304 is 40381958821.

It is a happy number.

It is a super-3 number, since 3×128859183043 (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12885918307) 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, 6672219 + ... + 6674149.

It is an arithmetic number, because the mean of its divisors is an integer number (312242112).

Almost surely, 212885918304 is an apocalyptic number.

12885918304 is a gapful number since it is divisible by the number (14) 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 12885918304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14987621376).

12885918304 is an abundant number, since it is smaller than the sum of its proper divisors (17089324448).

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

12885918304 is an frugal number, since it uses more digits than its factorization.

12885918304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041 (or 1971 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 49.

The spelling of 12885918304 in words is "twelve billion, eight hundred eighty-five million, nine hundred eighteen thousand, three hundred four".

Divisors: 1 2 4 7 8 14 16 28 31 32 56 62 112 124 217 224 248 434 496 868 961 992 1736 1922 1931 3472 3844 3862 6727 6944 7688 7724 13454 13517 15376 15448 26908 27034 29791 30752 30896 53816 54068 59582 59861 61792 107632 108136 119164 119722 208537 215264 216272 238328 239444 417074 419027 432544 476656 478888 834148 838054 953312 957776 1668296 1676108 1855691 1915552 3336592 3352216 3711382 6673184 6704432 7422764 12989837 13408864 14845528 25979674 29691056 51959348 57526421 59382112 103918696 115052842 207837392 230105684 402684947 415674784 460211368 805369894 920422736 1610739788 1840845472 3221479576 6442959152 12885918304