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12680120 = 235317003
BaseRepresentation
bin110000010111…
…101110111000
3212212012212002
4300113232320
511221230440
61131440132
7212531165
oct60275670
925765762
1012680120
117180842
1242b6048
13281c73b
14198106c
1511a7115
hexc17bb8

12680120 has 16 divisors (see below), whose sum is σ = 28530360. Its totient is φ = 5072032.

The previous prime is 12680117. The next prime is 12680137. The reversal of 12680120 is 2108621.

It is a super-3 number, since 3×126801203 (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12680092 and 12680101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158462 + ... + 158541.

Almost surely, 212680120 is an apocalyptic number.

12680120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12680120 is an abundant number, since it is smaller than the sum of its proper divisors (15850240).

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

12680120 is a wasteful number, since it uses less digits than its factorization.

12680120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317014 (or 317010 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 12680120 is about 3560.9156125918. The cubic root of 12680120 is about 233.1888538678.

Adding to 12680120 its reverse (2108621), we get a palindrome (14788741).

The spelling of 12680120 in words is "twelve million, six hundred eighty thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 317003 634006 1268012 1585015 2536024 3170030 6340060 12680120