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22330197 = 3217145949
BaseRepresentation
bin101010100101…
…1101101010101
31120000111021100
41111023231111
521204031242
62114340313
7360542421
oct125135525
946014240
1022330197
111167200a
12758a699
13481ac46
142d73b81
151e6154c
hex154bb55

22330197 has 12 divisors (see below), whose sum is σ = 34152300. Its totient is φ = 14011008.

The previous prime is 22330177. The next prime is 22330213. The reversal of 22330197 is 79103322.

It can be written as a sum of positive squares in 2 ways, for example, as 20875761 + 1454436 = 4569^2 + 1206^2 .

It is not a de Polignac number, because 22330197 - 27 = 22330069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22330197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22330177) 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, 72822 + ... + 73127.

It is an arithmetic number, because the mean of its divisors is an integer number (2846025).

Almost surely, 222330197 is an apocalyptic number.

It is an amenable number.

22330197 is a deficient number, since it is larger than the sum of its proper divisors (11822103).

22330197 is a wasteful number, since it uses less digits than its factorization.

22330197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145972 (or 145969 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 22330197 is about 4725.4837847569. The cubic root of 22330197 is about 281.5988335343.

The spelling of 22330197 in words is "twenty-two million, three hundred thirty thousand, one hundred ninety-seven".

Divisors: 1 3 9 17 51 153 145949 437847 1313541 2481133 7443399 22330197