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13200780 = 2235220013
BaseRepresentation
bin110010010110…
…110110001100
3220211200001210
4302112312030
511334411110
61150534420
7220130145
oct62266614
926750053
1013200780
1174a6a3a
124507410
132972718
141a78acc
15125b520
hexc96d8c

13200780 has 24 divisors (see below), whose sum is σ = 36962352. Its totient is φ = 3520192.

The previous prime is 13200779. The next prime is 13200791. The reversal of 13200780 is 8700231.

13200780 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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, 109947 + ... + 110066.

It is an arithmetic number, because the mean of its divisors is an integer number (1540098).

Almost surely, 213200780 is an apocalyptic number.

13200780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13200780 is an abundant number, since it is smaller than the sum of its proper divisors (23761572).

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

13200780 is a wasteful number, since it uses less digits than its factorization.

13200780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220025 (or 220023 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 13200780 is about 3633.2877672984. The cubic root of 13200780 is about 236.3378050487.

The spelling of 13200780 in words is "thirteen million, two hundred thousand, seven hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 220013 440026 660039 880052 1100065 1320078 2200130 2640156 3300195 4400260 6600390 13200780