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12888318 = 232148053
BaseRepresentation
bin110001001010…
…100011111110
3220020210110010
4301022203332
511244411233
61140124050
7214356162
oct61124376
926223403
1012888318
117303203
124396626
132893431
1419d6ca2
1511e8b63
hexc4a8fe

12888318 has 8 divisors (see below), whose sum is σ = 25776648. Its totient is φ = 4296104.

The previous prime is 12888313. The next prime is 12888319. The reversal of 12888318 is 81388821.

It is a sphenic number, since it is the product of 3 distinct primes.

12888318 is an admirable number.

It is a super-2 number, since 2×128883182 = 332217481738248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12888311) 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, 1074021 + ... + 1074032.

It is an arithmetic number, because the mean of its divisors is an integer number (3222081).

Almost surely, 212888318 is an apocalyptic number.

12888318 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12888318 is a wasteful number, since it uses less digits than its factorization.

12888318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148058.

The product of its digits is 24576, while the sum is 39.

The square root of 12888318 is about 3590.0303619886. The cubic root of 12888318 is about 234.4581934707.

The spelling of 12888318 in words is "twelve million, eight hundred eighty-eight thousand, three hundred eighteen".

Divisors: 1 2 3 6 2148053 4296106 6444159 12888318