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13120361560 = 2351229266891
BaseRepresentation
bin11000011100000100…
…01101010001011000
31020212101021102111001
430032002031101120
5203332303032220
610005530514344
7643064142655
oct141602152130
936771242431
1013120361560
115623113919
122661b959b4
1313112c4367
148c673ac2c
1551bcc980a
hex30e08d458

13120361560 has 32 divisors (see below), whose sum is σ = 29544944400. Its totient is φ = 5243854720.

The previous prime is 13120361549. The next prime is 13120361561. The reversal of 13120361560 is 6516302131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120361561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84286 + ... + 182605.

Almost surely, 213120361560 is an apocalyptic number.

13120361560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13120361560 is an abundant number, since it is smaller than the sum of its proper divisors (16424582840).

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

13120361560 is a wasteful number, since it uses less digits than its factorization.

13120361560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268131 (or 268127 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

Adding to 13120361560 its reverse (6516302131), we get a palindrome (19636663691).

The spelling of 13120361560 in words is "thirteen billion, one hundred twenty million, three hundred sixty-one thousand, five hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 1229 2458 4916 6145 9832 12290 24580 49160 266891 533782 1067564 1334455 2135128 2668910 5337820 10675640 328009039 656018078 1312036156 1640045195 2624072312 3280090390 6560180780 13120361560