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12990034 = 219379239
BaseRepresentation
bin110001100011…
…011001010010
3220102221222101
4301203121102
511311140114
61142231014
7215261551
oct61433122
926387871
1012990034
117372672
12442546a
1328ca815
141a21d98
151218d74
hexc63652

12990034 has 16 divisors (see below), whose sum is σ = 21067200. Its totient is φ = 5986224.

The previous prime is 12990013. The next prime is 12990041. The reversal of 12990034 is 43009921.

It is a happy number.

It is a super-3 number, since 3×129900343 (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12989984 and 12990011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3214 + ... + 6025.

It is an arithmetic number, because the mean of its divisors is an integer number (1316700).

Almost surely, 212990034 is an apocalyptic number.

12990034 is a deficient number, since it is larger than the sum of its proper divisors (8077166).

12990034 is a wasteful number, since it uses less digits than its factorization.

12990034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9297.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 12990034 is about 3604.1689749511. The cubic root of 12990034 is about 235.0733677665.

Adding to 12990034 its reverse (43009921), we get a palindrome (55999955).

The spelling of 12990034 in words is "twelve million, nine hundred ninety thousand, thirty-four".

Divisors: 1 2 19 37 38 74 703 1406 9239 18478 175541 341843 351082 683686 6495017 12990034