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12180704 = 251722391
BaseRepresentation
bin101110011101…
…110011100000
3211220211210012
4232131303200
511104240304
61113024052
7205351154
oct56356340
924824705
1012180704
11696a5a8
1240b5028
1326a6323
141891064
15110916e
hexb9dce0

12180704 has 24 divisors (see below), whose sum is σ = 25392528. Its totient is φ = 5731840.

The previous prime is 12180703. The next prime is 12180719. The reversal of 12180704 is 40708121.

It is a self number, because there is not a number n which added to its sum of digits gives 12180704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12180703) 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 3 ways as a sum of consecutive naturals, for example, 10652 + ... + 11739.

It is an arithmetic number, because the mean of its divisors is an integer number (1058022).

Almost surely, 212180704 is an apocalyptic number.

It is an amenable number.

12180704 is an abundant number, since it is smaller than the sum of its proper divisors (13211824).

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

12180704 is a wasteful number, since it uses less digits than its factorization.

12180704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22418 (or 22410 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 12180704 is about 3490.0865318785. The cubic root of 12180704 is about 230.0863192071.

Adding to 12180704 its reverse (40708121), we get a palindrome (52888825).

The spelling of 12180704 in words is "twelve million, one hundred eighty thousand, seven hundred four".

Divisors: 1 2 4 8 16 17 32 34 68 136 272 544 22391 44782 89564 179128 358256 380647 716512 761294 1522588 3045176 6090352 12180704