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12868406 = 212235261
BaseRepresentation
bin110001000101…
…101100110110
3220012210010122
4301011230312
511243242111
61135451542
7214244135
oct61055466
926183118
1012868406
11729a251
124386bb2
132887355
1419cd91c
1511e2cdb
hexc45b36

12868406 has 8 divisors (see below), whose sum is σ = 19322064. Its totient is φ = 6427720.

The previous prime is 12868399. The next prime is 12868411. The reversal of 12868406 is 60486821.

12868406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185 + ... + 5076.

It is an arithmetic number, because the mean of its divisors is an integer number (2415258).

Almost surely, 212868406 is an apocalyptic number.

12868406 is a deficient number, since it is larger than the sum of its proper divisors (6453658).

12868406 is a wasteful number, since it uses less digits than its factorization.

12868406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6486.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 12868406 is about 3587.2560544238. The cubic root of 12868406 is about 234.3373880029.

The spelling of 12868406 in words is "twelve million, eight hundred sixty-eight thousand, four hundred six".

Divisors: 1 2 1223 2446 5261 10522 6434203 12868406