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12580660 = 2251933107
BaseRepresentation
bin101111111111…
…011100110100
3212200011102101
4233333130310
511210040120
61125351444
7211635211
oct57773464
925604371
1012580660
117113044
124268584
1327b63a1
141956b08
15118790a
hexbff734

12580660 has 24 divisors (see below), whose sum is σ = 27810720. Its totient is φ = 4767264.

The previous prime is 12580643. The next prime is 12580681. The reversal of 12580660 is 6608521.

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, 16174 + ... + 16933.

It is an arithmetic number, because the mean of its divisors is an integer number (1158780).

Almost surely, 212580660 is an apocalyptic number.

12580660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12580660 is an abundant number, since it is smaller than the sum of its proper divisors (15230060).

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

12580660 is a wasteful number, since it uses less digits than its factorization.

12580660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33135 (or 33133 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 12580660 is about 3546.9226098126. The cubic root of 12580660 is about 232.5775592016.

The spelling of 12580660 in words is "twelve million, five hundred eighty thousand, six hundred sixty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 380 33107 66214 132428 165535 331070 629033 662140 1258066 2516132 3145165 6290330 12580660