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12938619790 = 251319876809
BaseRepresentation
bin11000000110011001…
…11010101110001110
31020101201021222122101
430003030322232032
5202444241313130
65535515305314
7635426311405
oct140314725616
936351258571
1012938619790
11553a571608
12261114b23a
1312b2760755
148aa54c63c
1550ad7a1ca
hex30333ab8e

12938619790 has 16 divisors (see below), whose sum is σ = 23467300560. Its totient is φ = 5135940160.

The previous prime is 12938619737. The next prime is 12938619817. The reversal of 12938619790 is 9791683921.

12938619790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 4937095 + ... + 4939714.

It is an arithmetic number, because the mean of its divisors is an integer number (1466706285).

Almost surely, 212938619790 is an apocalyptic number.

12938619790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12938619790 is a deficient number, since it is larger than the sum of its proper divisors (10528680770).

12938619790 is a wasteful number, since it uses less digits than its factorization.

12938619790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9876947.

The product of its (nonzero) digits is 1469664, while the sum is 55.

The spelling of 12938619790 in words is "twelve billion, nine hundred thirty-eight million, six hundred nineteen thousand, seven hundred ninety".

Divisors: 1 2 5 10 131 262 655 1310 9876809 19753618 49384045 98768090 1293861979 2587723958 6469309895 12938619790