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12080355 = 3571031117
BaseRepresentation
bin101110000101…
…010011100011
3211201202010120
4232011103203
511043032410
61110531323
7204452460
oct56052343
924652116
1012080355
116901171
124066b43
13266c751
141866667
1510d9570
hexb854e3

12080355 has 32 divisors (see below), whose sum is σ = 22324224. Its totient is φ = 5463936.

The previous prime is 12080347. The next prime is 12080357. The reversal of 12080355 is 55308021.

12080355 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12080355 - 23 = 12080347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12080357) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10257 + ... + 11373.

It is an arithmetic number, because the mean of its divisors is an integer number (697632).

Almost surely, 212080355 is an apocalyptic number.

12080355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12080355 is a deficient number, since it is larger than the sum of its proper divisors (10243869).

12080355 is a wasteful number, since it uses less digits than its factorization.

12080355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 12080355 is about 3475.6805089076. The cubic root of 12080355 is about 229.4527316134.

Adding to 12080355 its reverse (55308021), we get a palindrome (67388376).

The spelling of 12080355 in words is "twelve million, eighty thousand, three hundred fifty-five".

Divisors: 1 3 5 7 15 21 35 103 105 309 515 721 1117 1545 2163 3351 3605 5585 7819 10815 16755 23457 39095 115051 117285 345153 575255 805357 1725765 2416071 4026785 12080355