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12541940 = 2251314787
BaseRepresentation
bin101111110101…
…111111110100
3212121012022022
4233311333310
511202320230
61124452312
7211414265
oct57657764
925535268
1012541940
117096a44
12424a098
1327a1888
14194696c
15117b1e5
hexbf5ff4

12541940 has 24 divisors (see below), whose sum is σ = 26544672. Its totient is φ = 4977440.

The previous prime is 12541933. The next prime is 12541967. The reversal of 12541940 is 4914521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227 + ... + 5013.

It is an arithmetic number, because the mean of its divisors is an integer number (1106028).

Almost surely, 212541940 is an apocalyptic number.

12541940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12541940 is an abundant number, since it is smaller than the sum of its proper divisors (14002732).

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

12541940 is a wasteful number, since it uses less digits than its factorization.

12541940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4927 (or 4925 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 12541940 is about 3541.4601508417. The cubic root of 12541940 is about 232.3387095788.

The spelling of 12541940 in words is "twelve million, five hundred forty-one thousand, nine hundred forty".

Divisors: 1 2 4 5 10 20 131 262 524 655 1310 2620 4787 9574 19148 23935 47870 95740 627097 1254194 2508388 3135485 6270970 12541940