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12876680 = 2351916943
BaseRepresentation
bin110001000111…
…101110001000
3220020012111002
4301013232020
511244023210
61135554132
7214310225
oct61075610
926205432
1012876680
1172a5493
12438b948
13288b04b
1419d294c
1511e54a5
hexc47b88

12876680 has 32 divisors (see below), whose sum is σ = 30499200. Its totient is φ = 4879296.

The previous prime is 12876671. The next prime is 12876683. The reversal of 12876680 is 8667821.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (12876683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7712 + ... + 9231.

It is an arithmetic number, because the mean of its divisors is an integer number (953100).

Almost surely, 212876680 is an apocalyptic number.

12876680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12876680 is an abundant number, since it is smaller than the sum of its proper divisors (17622520).

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

12876680 is a wasteful number, since it uses less digits than its factorization.

12876680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16973 (or 16969 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 12876680 is about 3588.4091182584. The cubic root of 12876680 is about 234.3876012188.

The spelling of 12876680 in words is "twelve million, eight hundred seventy-six thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 19 20 38 40 76 95 152 190 380 760 16943 33886 67772 84715 135544 169430 321917 338860 643834 677720 1287668 1609585 2575336 3219170 6438340 12876680