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13252405212 = 2232722950923
BaseRepresentation
bin11000101011110011…
…11010011111011100
31021012120201221022200
430111321322133130
5204120103431322
610031005011500
7646256404614
oct142571723734
937176657280
1013252405212
115690701202
12269a253b90
1313327770b7
148da0ada44
155286ad8ac
hex315e7a7dc

13252405212 has 36 divisors (see below), whose sum is σ = 33504427320. Its totient is φ = 4416770592.

The previous prime is 13252405189. The next prime is 13252405219. The reversal of 13252405212 is 21250425231.

13252405212 is a `hidden beast` number, since 1 + 3 + 252 + 405 + 2 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13252405219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 234783 + ... + 285705.

Almost surely, 213252405212 is an apocalyptic number.

13252405212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13252405212 is an abundant number, since it is smaller than the sum of its proper divisors (20252022108).

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

13252405212 is a wasteful number, since it uses less digits than its factorization.

13252405212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58162 (or 58157 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 13252405212 in words is "thirteen billion, two hundred fifty-two million, four hundred five thousand, two hundred twelve".

Divisors: 1 2 3 4 6 9 12 18 36 7229 14458 21687 28916 43374 50923 65061 86748 101846 130122 152769 203692 260244 305538 458307 611076 916614 1833228 368122367 736244734 1104367101 1472489468 2208734202 3313101303 4417468404 6626202606 13252405212