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12186345704 = 23131941349431
BaseRepresentation
bin10110101100101110…
…01110000011101000
31011110021202111121012
423112113032003220
5144424201030304
65333123403052
7610663141451
oct132627160350
934407674535
1012186345704
115193968995
122441223488
1311c294ab60
14838688128
154b4cce16e
hex2d65ce0e8

12186345704 has 128 divisors (see below), whose sum is σ = 26671680000. Its totient is φ = 5171558400.

The previous prime is 12186345701. The next prime is 12186345707. The reversal of 12186345704 is 40754368121.

12186345704 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12186345701) and next prime (12186345707).

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (12186345701) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 28274369 + ... + 28274799.

It is an arithmetic number, because the mean of its divisors is an integer number (208372500).

Almost surely, 212186345704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12186345704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13335840000).

12186345704 is an abundant number, since it is smaller than the sum of its proper divisors (14485334296).

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

12186345704 is a wasteful number, since it uses less digits than its factorization.

12186345704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859 (or 855 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 12186345704 in words is "twelve billion, one hundred eighty-six million, three hundred forty-five thousand, seven hundred four".

Divisors: 1 2 4 8 13 19 26 38 41 52 76 82 104 152 164 247 328 349 431 494 533 698 779 862 988 1066 1396 1558 1724 1976 2132 2792 3116 3448 4264 4537 5603 6232 6631 8189 9074 10127 11206 13262 14309 16378 17671 18148 20254 22412 26524 28618 32756 35342 36296 40508 44824 53048 57236 65512 70684 81016 86203 106457 114472 141368 150419 172406 186017 212914 229723 271871 300838 335749 344812 372034 425828 459446 543742 601676 671498 689624 744068 851656 918892 1087484 1203352 1342996 1488136 1837784 1955447 2174968 2685992 2857961 3534323 3910894 4364737 5715922 6167179 7068646 7821788 8729474 11431844 12334358 14137292 15643576 17458948 22863688 24668716 28274584 34917896 37153493 49337432 74306986 80173327 117176401 148613972 160346654 234352802 297227944 320693308 468705604 641386616 937411208 1523293213 3046586426 6093172852 12186345704