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12670378 = 2719223109
BaseRepresentation
bin110000010101…
…010110101010
3212211201111021
4300111112222
511220423003
61131323054
7212460610
oct60252652
925751437
1012670378
117174496
1242b048a
132818186
14197b6b0
1511a42bd
hexc155aa

12670378 has 48 divisors (see below), whose sum is σ = 24140160. Its totient is φ = 4875552.

The previous prime is 12670373. The next prime is 12670381. The reversal of 12670378 is 87307621.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12670373) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 116188 + ... + 116296.

It is an arithmetic number, because the mean of its divisors is an integer number (502920).

Almost surely, 212670378 is an apocalyptic number.

12670378 is a deficient number, since it is larger than the sum of its proper divisors (11469782).

12670378 is a wasteful number, since it uses less digits than its factorization.

12670378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 12670378 is about 3559.5474431450. The cubic root of 12670378 is about 233.1291197369.

Adding to 12670378 its reverse (87307621), we get a palindrome (99977999).

The spelling of 12670378 in words is "twelve million, six hundred seventy thousand, three hundred seventy-eight".

Divisors: 1 2 7 14 19 23 38 46 109 133 161 218 266 322 361 437 722 763 874 1526 2071 2507 2527 3059 4142 5014 5054 6118 8303 14497 16606 17549 28994 35098 39349 47633 58121 78698 95266 116242 275443 333431 550886 666862 905027 1810054 6335189 12670378