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166230941 = 2574011613
BaseRepresentation
bin10011110100001…
…11101110011101
3102120210101222112
421322013232131
5320023342231
624254523405
74055640212
oct1172075635
9376711875
10166230941
1185918848
1247806565
1328592906
1418111b09
15e8d892b
hex9e87b9d

166230941 has 8 divisors (see below), whose sum is σ = 167397624. Its totient is φ = 165068800.

The previous prime is 166230923. The next prime is 166231003. The reversal of 166230941 is 149032661.

It can be written as a sum of positive squares in 4 ways, for example, as 135815716 + 30415225 = 11654^2 + 5515^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166230941 - 214 = 166214557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166230898 and 166230907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166230901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102251 + ... + 103863.

It is an arithmetic number, because the mean of its divisors is an integer number (20924703).

Almost surely, 2166230941 is an apocalyptic number.

It is an amenable number.

166230941 is a deficient number, since it is larger than the sum of its proper divisors (1166683).

166230941 is a wasteful number, since it uses less digits than its factorization.

166230941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2271.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 166230941 is about 12893.0578607249. The cubic root of 166230941 is about 549.8412114614.

The spelling of 166230941 in words is "one hundred sixty-six million, two hundred thirty thousand, nine hundred forty-one".

Divisors: 1 257 401 1613 103057 414541 646813 166230941