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12888205 = 511234331
BaseRepresentation
bin110001001010…
…100010001101
3220020210021221
4301022202031
511244410310
61140123341
7214355641
oct61124215
926223257
1012888205
117303110
124396551
132893375
1419d6c21
1511e8ada
hexc4a88d

12888205 has 8 divisors (see below), whose sum is σ = 16871904. Its totient is φ = 9373200.

The previous prime is 12888203. The next prime is 12888217. The reversal of 12888205 is 50288821.

It is a happy number.

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

It is not a de Polignac number, because 12888205 - 21 = 12888203 is a prime.

It is a super-2 number, since 2×128882052 = 332211656244050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12888203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117111 + ... + 117220.

It is an arithmetic number, because the mean of its divisors is an integer number (2108988).

Almost surely, 212888205 is an apocalyptic number.

It is an amenable number.

12888205 is a deficient number, since it is larger than the sum of its proper divisors (3983699).

12888205 is a wasteful number, since it uses less digits than its factorization.

12888205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234347.

The product of its (nonzero) digits is 10240, while the sum is 34.

The square root of 12888205 is about 3590.0146239256. The cubic root of 12888205 is about 234.4575082545.

The spelling of 12888205 in words is "twelve million, eight hundred eighty-eight thousand, two hundred five".

Divisors: 1 5 11 55 234331 1171655 2577641 12888205