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230191722 = 23212788429
BaseRepresentation
bin11011011100001…
…11001001101010
3121001010221200100
431232013021222
5432412113342
634501450230
75463411615
oct1556071152
9531127610
10230191722
11108a344a2
1265110976
13388c8627
142280117c
151531ee4c
hexdb8726a

230191722 has 12 divisors (see below), whose sum is σ = 498748770. Its totient is φ = 76730568.

The previous prime is 230191721. The next prime is 230191733. The reversal of 230191722 is 227191032.

It can be written as a sum of positive squares in only one way, i.e., 165405321 + 64786401 = 12861^2 + 8049^2 .

It is not an unprimeable number, because it can be changed into a prime (230191721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6394197 + ... + 6394232.

Almost surely, 2230191722 is an apocalyptic number.

230191722 is an abundant number, since it is smaller than the sum of its proper divisors (268557048).

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

230191722 is a wasteful number, since it uses less digits than its factorization.

230191722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12788437 (or 12788434 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 230191722 is about 15172.0704585762. The cubic root of 230191722 is about 612.8627617554.

The spelling of 230191722 in words is "two hundred thirty million, one hundred ninety-one thousand, seven hundred twenty-two".

Divisors: 1 2 3 6 9 18 12788429 25576858 38365287 76730574 115095861 230191722