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12190368100 = 22526121812
BaseRepresentation
bin10110101101001101…
…00100000101100100
31011110120022212021211
423112212210011210
5144431213234400
65333345521204
7611042263531
oct132646440544
934416285254
1012190368100
115196165a89
122442643204
1311c3728981
14839013d88
154b5325dba
hex2d69a4164

12190368100 has 81 divisors (see below), whose sum is σ = 27043271073. Its totient is φ = 4769712000.

The previous prime is 12190368089. The next prime is 12190368107. The reversal of 12190368100 is 186309121.

The square root of 12190368100 is 110410.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 7833312036 + 4357056064 = 88506^2 + 66008^2 .

It is a super-2 number, since 2×121903681002 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12190368107) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 67350010 + ... + 67350190.

Almost surely, 212190368100 is an apocalyptic number.

12190368100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12190368100 is the 110410-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12190368100

12190368100 is an abundant number, since it is smaller than the sum of its proper divisors (14852902973).

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

12190368100 is an equidigital number, since it uses as much as digits as its factorization.

12190368100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 12190368100 in words is "twelve billion, one hundred ninety million, three hundred sixty-eight thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 61 100 122 181 244 305 362 610 724 905 1220 1525 1810 3050 3620 3721 4525 6100 7442 9050 11041 14884 18100 18605 22082 32761 37210 44164 55205 65522 74420 93025 110410 131044 163805 186050 220820 276025 327610 372100 552050 655220 673501 819025 1104100 1347002 1638050 1998421 2694004 3276100 3367505 3996842 6735010 7993684 9992105 13470020 16837525 19984210 33675050 39968420 49960525 67350100 99921050 121903681 199842100 243807362 487614724 609518405 1219036810 2438073620 3047592025 6095184050 12190368100