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12210293 = 192812287
BaseRepresentation
bin101110100101…
…000001110101
3211222100101002
4232211001311
511111212133
61113413045
7205533344
oct56450165
924870332
1012210293
11698a857
12410a185
1326b6934
14189bb5b
151112ce8
hexba5075

12210293 has 8 divisors (see below), whose sum is σ = 12904320. Its totient is φ = 11521440.

The previous prime is 12210287. The next prime is 12210307. The reversal of 12210293 is 39201221.

12210293 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12210293 - 24 = 12210277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4196 + ... + 6482.

It is an arithmetic number, because the mean of its divisors is an integer number (1613040).

Almost surely, 212210293 is an apocalyptic number.

It is an amenable number.

12210293 is a deficient number, since it is larger than the sum of its proper divisors (694027).

12210293 is a wasteful number, since it uses less digits than its factorization.

12210293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2587.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 12210293 is about 3494.3229673286. The cubic root of 12210293 is about 230.2724748105.

The spelling of 12210293 in words is "twelve million, two hundred ten thousand, two hundred ninety-three".

Divisors: 1 19 281 2287 5339 43453 642647 12210293