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12190331930 = 257187992681
BaseRepresentation
bin10110101101001100…
…11011010000011010
31011110120021000200012
423112212123100122
5144431211110210
65333345041522
7611042053220
oct132646332032
934416230605
1012190331930
115196140897
1224426262a2
1311c371537a
14839004b10
154b531a305
hex2d699b41a

12190331930 has 32 divisors (see below), whose sum is σ = 25090871040. Its totient is φ = 4177272960.

The previous prime is 12190331891. The next prime is 12190331941. The reversal of 12190331930 is 3913309121.

12190331930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85190 + ... + 177870.

It is an arithmetic number, because the mean of its divisors is an integer number (784089720).

Almost surely, 212190331930 is an apocalyptic number.

12190331930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12190331930 is an abundant number, since it is smaller than the sum of its proper divisors (12900539110).

12190331930 is a wasteful number, since it uses less digits than its factorization.

12190331930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94574.

The product of its (nonzero) digits is 4374, while the sum is 32.

The spelling of 12190331930 in words is "twelve billion, one hundred ninety million, three hundred thirty-one thousand, nine hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 1879 3758 9395 13153 18790 26306 65765 92681 131530 185362 463405 648767 926810 1297534 3243835 6487670 174147599 348295198 870737995 1219033193 1741475990 2438066386 6095165965 12190331930