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12668930 = 251266893
BaseRepresentation
bin110000010101…
…000000000010
3212211122111122
4300111000002
511220401210
61131312242
7212453441
oct60250002
925748448
1012668930
11717339a
1242ab682
132817611
14197ad58
1511a3b55
hexc15002

12668930 has 8 divisors (see below), whose sum is σ = 22804092. Its totient is φ = 5067568.

The previous prime is 12668921. The next prime is 12668933. The reversal of 12668930 is 3986621.

It can be written as a sum of positive squares in 2 ways, for example, as 11202409 + 1466521 = 3347^2 + 1211^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12668933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633437 + ... + 633456.

Almost surely, 212668930 is an apocalyptic number.

12668930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12668930 is a deficient number, since it is larger than the sum of its proper divisors (10135162).

12668930 is a wasteful number, since it uses less digits than its factorization.

12668930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266900.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 12668930 is about 3559.3440406906. The cubic root of 12668930 is about 233.1202385542.

The spelling of 12668930 in words is "twelve million, six hundred sixty-eight thousand, nine hundred thirty".

Divisors: 1 2 5 10 1266893 2533786 6334465 12668930