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12020193 = 3210912253
BaseRepresentation
bin101101110110…
…100111100001
3211121200121100
4231312213201
511034121233
61105345013
7204112203
oct55664741
924550540
1012020193
11686aa49
124038169
13264b253
14184c773
1510c6813
hexb769e1

12020193 has 12 divisors (see below), whose sum is σ = 17523220. Its totient is φ = 7939296.

The previous prime is 12020161. The next prime is 12020209. The reversal of 12020193 is 39102021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7144929 + 4875264 = 2673^2 + 2208^2 .

It is not a de Polignac number, because 12020193 - 25 = 12020161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12220193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5146 + ... + 7107.

Almost surely, 212020193 is an apocalyptic number.

It is an amenable number.

12020193 is a deficient number, since it is larger than the sum of its proper divisors (5503027).

12020193 is a wasteful number, since it uses less digits than its factorization.

12020193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12368 (or 12365 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 12020193 is about 3467.0149985254. The cubic root of 12020193 is about 229.0711944057.

The spelling of 12020193 in words is "twelve million, twenty thousand, one hundred ninety-three".

Divisors: 1 3 9 109 327 981 12253 36759 110277 1335577 4006731 12020193