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12886970 = 251288697
BaseRepresentation
bin110001001010…
…001110111010
3220020201121012
4301022032322
511244340340
61140113522
7214352225
oct61121672
926221535
1012886970
117302198
1243958a2
132892935
1419d65bc
1511e8565
hexc4a3ba

12886970 has 8 divisors (see below), whose sum is σ = 23196564. Its totient is φ = 5154784.

The previous prime is 12886967. The next prime is 12886987. The reversal of 12886970 is 7968821.

12886970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10543009 + 2343961 = 3247^2 + 1531^2 .

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

It is a super-6 number, since 6×128869706 (a number of 44 digits) contains 666666 as substring.

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, 644339 + ... + 644358.

Almost surely, 212886970 is an apocalyptic number.

12886970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12886970 is a deficient number, since it is larger than the sum of its proper divisors (10309594).

12886970 is a wasteful number, since it uses less digits than its factorization.

12886970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288704.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 12886970 is about 3589.8426149345. The cubic root of 12886970 is about 234.4500191259.

The spelling of 12886970 in words is "twelve million, eight hundred eighty-six thousand, nine hundred seventy".

Divisors: 1 2 5 10 1288697 2577394 6443485 12886970