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12869290 = 2571571171
BaseRepresentation
bin110001000101…
…111010101010
3220012211100101
4301011322222
511243304130
61135500014
7214246540
oct61057252
926184311
1012869290
11729a985
12438760a
132887885
1419cdd90
1511e31ca
hexc45eaa

12869290 has 32 divisors (see below), whose sum is σ = 26665344. Its totient is φ = 4380480.

The previous prime is 12869273. The next prime is 12869299. The reversal of 12869290 is 9296821.

12869290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12869299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10405 + ... + 11575.

It is an arithmetic number, because the mean of its divisors is an integer number (833292).

Almost surely, 212869290 is an apocalyptic number.

12869290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12869290 is an abundant number, since it is smaller than the sum of its proper divisors (13796054).

12869290 is a wasteful number, since it uses less digits than its factorization.

12869290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 12869290 is about 3587.3792662611. The cubic root of 12869290 is about 234.3427538451.

The spelling of 12869290 in words is "twelve million, eight hundred sixty-nine thousand, two hundred ninety".

Divisors: 1 2 5 7 10 14 35 70 157 314 785 1099 1171 1570 2198 2342 5495 5855 8197 10990 11710 16394 40985 81970 183847 367694 919235 1286929 1838470 2573858 6434645 12869290