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12799270 = 2511235059
BaseRepresentation
bin110000110100…
…110100100110
3220002021022001
4300310310212
511234034040
61134155514
7213535441
oct60646446
926067261
1012799270
117252310
124352b9a
132861a43
1419b2658
1511cc59a
hexc34d26

12799270 has 32 divisors (see below), whose sum is σ = 26231040. Its totient is φ = 4451040.

The previous prime is 12799261. The next prime is 12799273. The reversal of 12799270 is 7299721.

12799270 is a nontrivial binomial coefficient, being equal to C(5060, 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12799273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1 + ... + 5059.

It is an arithmetic number, because the mean of its divisors is an integer number (819720).

Almost surely, 212799270 is an apocalyptic number.

12799270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12799270 is the 5059-th triangular number and also the 2530-th hexagonal number.

12799270 is the 1687-th centered nonagonal number.

12799270 is an abundant number, since it is smaller than the sum of its proper divisors (13431770).

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

12799270 is a wasteful number, since it uses less digits than its factorization.

12799270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5100.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 12799270 is about 3577.6067419436. The cubic root of 12799270 is about 233.9169720288.

The spelling of 12799270 in words is "twelve million, seven hundred ninety-nine thousand, two hundred seventy".

Divisors: 1 2 5 10 11 22 23 46 55 110 115 230 253 506 1265 2530 5059 10118 25295 50590 55649 111298 116357 232714 278245 556490 581785 1163570 1279927 2559854 6399635 12799270