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12868011 = 331361601
BaseRepresentation
bin110001000101…
…100110101011
3220012202121000
4301011212223
511243234021
61135450043
7214243032
oct61054653
926182530
1012868011
117299a22
124386923
132887110
1419cd719
1511e2b26
hexc459ab

12868011 has 32 divisors (see below), whose sum is σ = 20901440. Its totient is φ = 7776000.

The previous prime is 12868003. The next prime is 12868013. The reversal of 12868011 is 11086821.

12868011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12868011 - 23 = 12868003 is a prime.

It is a super-2 number, since 2×128680112 = 331171414192242, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12868013) 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, 21111 + ... + 21711.

It is an arithmetic number, because the mean of its divisors is an integer number (653170).

Almost surely, 212868011 is an apocalyptic number.

12868011 is a deficient number, since it is larger than the sum of its proper divisors (8033429).

12868011 is a wasteful number, since it uses less digits than its factorization.

12868011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 12868011 is about 3587.2009979927. The cubic root of 12868011 is about 234.3349902904.

The spelling of 12868011 in words is "twelve million, eight hundred sixty-eight thousand, eleven".

Divisors: 1 3 9 13 27 39 61 117 183 351 549 601 793 1647 1803 2379 5409 7137 7813 16227 21411 23439 36661 70317 109983 210951 329949 476593 989847 1429779 4289337 12868011