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12546980 = 225627349
BaseRepresentation
bin101111110111…
…001110100100
3212121110012222
4233313032210
511203000410
61124531512
7211435055
oct57671644
925543188
1012546980
11709a806
124250b98
1327a3c64
14194872c
15117c955
hexbf73a4

12546980 has 12 divisors (see below), whose sum is σ = 26348700. Its totient is φ = 5018784.

The previous prime is 12546977. The next prime is 12546991. The reversal of 12546980 is 8964521.

It can be written as a sum of positive squares in 2 ways, for example, as 9278116 + 3268864 = 3046^2 + 1808^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12546980.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313655 + ... + 313694.

It is an arithmetic number, because the mean of its divisors is an integer number (2195725).

Almost surely, 212546980 is an apocalyptic number.

12546980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12546980 is an abundant number, since it is smaller than the sum of its proper divisors (13801720).

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

12546980 is a wasteful number, since it uses less digits than its factorization.

12546980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627358 (or 627356 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 12546980 is about 3542.1716502733. The cubic root of 12546980 is about 232.3698273133.

The spelling of 12546980 in words is "twelve million, five hundred forty-six thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 627349 1254698 2509396 3136745 6273490 12546980