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12193212 = 2231953479
BaseRepresentation
bin101110100000…
…110110111100
3211221110221110
4232200312330
511110140322
61113202020
7205432503
oct56406674
924843843
1012193212
116978a39
124100310
1326abc25
14189583a
15110cc0c
hexba0dbc

12193212 has 24 divisors (see below), whose sum is σ = 29948800. Its totient is φ = 3850416.

The previous prime is 12193211. The next prime is 12193241. The reversal of 12193212 is 21239121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12193211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26512 + ... + 26967.

Almost surely, 212193212 is an apocalyptic number.

12193212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12193212 is an abundant number, since it is smaller than the sum of its proper divisors (17755588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12193212 is a wasteful number, since it uses less digits than its factorization.

12193212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53505 (or 53503 counting only the distinct ones).

The product of its digits is 216, while the sum is 21.

The square root of 12193212 is about 3491.8780047419. The cubic root of 12193212 is about 230.1650485142.

The spelling of 12193212 in words is "twelve million, one hundred ninety-three thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 19 38 57 76 114 228 53479 106958 160437 213916 320874 641748 1016101 2032202 3048303 4064404 6096606 12193212