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12102194 = 213465469
BaseRepresentation
bin101110001010…
…101000110010
3211202212002102
4232022220302
511044232234
61111220402
7204603236
oct56125062
924685072
1012102194
116916615
124077702
132679680
1418705c6
1510e0c7e
hexb8aa32

12102194 has 8 divisors (see below), whose sum is σ = 19549740. Its totient is φ = 5585616.

The previous prime is 12102157. The next prime is 12102199. The reversal of 12102194 is 49120121.

It can be written as a sum of positive squares in 2 ways, for example, as 12075625 + 26569 = 3475^2 + 163^2 .

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

It is a super-2 number, since 2×121021942 = 292926199227272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12102199) 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 3 ways as a sum of consecutive naturals, for example, 232709 + ... + 232760.

Almost surely, 212102194 is an apocalyptic number.

12102194 is a deficient number, since it is larger than the sum of its proper divisors (7447546).

12102194 is a wasteful number, since it uses less digits than its factorization.

12102194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465484.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 12102194 is about 3478.8207772175. The cubic root of 12102194 is about 229.5909174415.

The spelling of 12102194 in words is "twelve million, one hundred two thousand, one hundred ninety-four".

Divisors: 1 2 13 26 465469 930938 6051097 12102194