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12842690 = 257271677
BaseRepresentation
bin110000111111…
…011011000010
3220011110212012
4300333123002
511241431230
61135132522
7214106150
oct60773302
926143765
1012842690
1172819a3
124374142
132878733
1419c43d0
1511da395
hexc3f6c2

12842690 has 32 divisors (see below), whose sum is σ = 26555904. Its totient is φ = 4380480.

The previous prime is 12842659. The next prime is 12842699. The reversal of 12842690 is 9624821.

It is a super-2 number, since 2×128426902 = 329869372872200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12842699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18632 + ... + 19308.

It is an arithmetic number, because the mean of its divisors is an integer number (829872).

Almost surely, 212842690 is an apocalyptic number.

12842690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12842690 is an abundant number, since it is smaller than the sum of its proper divisors (13713214).

12842690 is a wasteful number, since it uses less digits than its factorization.

12842690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 12842690 is about 3583.6699066739. The cubic root of 12842690 is about 234.1811853113.

The spelling of 12842690 in words is "twelve million, eight hundred forty-two thousand, six hundred ninety".

Divisors: 1 2 5 7 10 14 35 70 271 542 677 1354 1355 1897 2710 3385 3794 4739 6770 9478 9485 18970 23695 47390 183467 366934 917335 1284269 1834670 2568538 6421345 12842690