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12280875 = 35332749
BaseRepresentation
bin101110110110…
…010000101011
3212002221012020
4232312100223
511120442000
61115115523
7206246205
oct56662053
925087166
1012280875
116a28892
124142ba3
13270cab9
1418b9775
151128ba0
hexbb642b

12280875 has 16 divisors (see below), whose sum is σ = 20436000. Its totient is φ = 6549600.

The previous prime is 12280871. The next prime is 12280883. The reversal of 12280875 is 57808221.

It is not a de Polignac number, because 12280875 - 22 = 12280871 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12280871) 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 15 ways as a sum of consecutive naturals, for example, 16000 + ... + 16749.

It is an arithmetic number, because the mean of its divisors is an integer number (1277250).

Almost surely, 212280875 is an apocalyptic number.

12280875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12280875 is a deficient number, since it is larger than the sum of its proper divisors (8155125).

12280875 is an equidigital number, since it uses as much as digits as its factorization.

12280875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32767 (or 32757 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 12280875 is about 3504.4079385825. The cubic root of 12280875 is about 230.7153218093.

The spelling of 12280875 in words is "twelve million, two hundred eighty thousand, eight hundred seventy-five".

Divisors: 1 3 5 15 25 75 125 375 32749 98247 163745 491235 818725 2456175 4093625 12280875