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12193061 = 39730713
BaseRepresentation
bin101110100000…
…110100100101
3211221110201212
4232200310211
511110134221
61113201205
7205432166
oct56406445
924843655
1012193061
116978911
124100205
1326abb3a
14189576d
15110cb5b
hexba0d25

12193061 has 4 divisors (see below), whose sum is σ = 12224172. Its totient is φ = 12161952.

The previous prime is 12193033. The next prime is 12193081. The reversal of 12193061 is 16039121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9728161 + 2464900 = 3119^2 + 1570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12193061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12193001) 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, 14960 + ... + 15753.

It is an arithmetic number, because the mean of its divisors is an integer number (3056043).

Almost surely, 212193061 is an apocalyptic number.

It is an amenable number.

12193061 is a deficient number, since it is larger than the sum of its proper divisors (31111).

12193061 is an equidigital number, since it uses as much as digits as its factorization.

12193061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31110.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 12193061 is about 3491.8563830719. The cubic root of 12193061 is about 230.1640983936.

The spelling of 12193061 in words is "twelve million, one hundred ninety-three thousand, sixty-one".

Divisors: 1 397 30713 12193061