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12200223 = 371930577
BaseRepresentation
bin101110100010…
…100100011111
3211221211120010
4232202210133
511110401343
61113254303
7205462110
oct56424437
924854503
1012200223
116983232
124104393
1326b2189
141898207
15110ed33
hexba291f

12200223 has 16 divisors (see below), whose sum is σ = 19569920. Its totient is φ = 6604416.

The previous prime is 12200179. The next prime is 12200239. The reversal of 12200223 is 32200221.

It is not a de Polignac number, because 12200223 - 210 = 12199199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12200199 and 12200208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200263) 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 15 ways as a sum of consecutive naturals, for example, 14890 + ... + 15687.

It is an arithmetic number, because the mean of its divisors is an integer number (1223120).

Almost surely, 212200223 is an apocalyptic number.

12200223 is a deficient number, since it is larger than the sum of its proper divisors (7369697).

12200223 is a wasteful number, since it uses less digits than its factorization.

12200223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30606.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 12200223 is about 3492.8817615259. The cubic root of 12200223 is about 230.2091544197.

Adding to 12200223 its reverse (32200221), we get a palindrome (44400444).

The spelling of 12200223 in words is "twelve million, two hundred thousand, two hundred twenty-three".

Divisors: 1 3 7 19 21 57 133 399 30577 91731 214039 580963 642117 1742889 4066741 12200223