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230616145 = 5167276187
BaseRepresentation
bin11011011111011…
…10110001010001
3121001221111212201
431233232301101
5433014204040
634514523201
75500130164
oct1557566121
9531844781
10230616145
111091a4361
1265296501
1338a16876
14228b1adb
15153a5a9a
hexdbeec51

230616145 has 8 divisors (see below), whose sum is σ = 278397504. Its totient is φ = 183387504.

The previous prime is 230616143. The next prime is 230616157. The reversal of 230616145 is 541616032.

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 230616145 - 21 = 230616143 is a prime.

It is a super-2 number, since 2×2306161452 = 106367612669322050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230616143) 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, 137259 + ... + 138928.

It is an arithmetic number, because the mean of its divisors is an integer number (34799688).

Almost surely, 2230616145 is an apocalyptic number.

It is an amenable number.

230616145 is a deficient number, since it is larger than the sum of its proper divisors (47781359).

230616145 is a wasteful number, since it uses less digits than its factorization.

230616145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276359.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 230616145 is about 15186.0510008363. The cubic root of 230616145 is about 613.2391919610.

The spelling of 230616145 in words is "two hundred thirty million, six hundred sixteen thousand, one hundred forty-five".

Divisors: 1 5 167 835 276187 1380935 46123229 230616145