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230278561 = 2277871289
BaseRepresentation
bin11011011100111…
…00010110100001
3121001022100210121
431232130112201
5432422403221
634503400241
75464223032
oct1556342641
9531270717
10230278561
11108a93767
1265153081
1338929006
1422824a89
151533aa41
hexdb9c5a1

230278561 has 8 divisors (see below), whose sum is σ = 231766560. Its totient is φ = 228795168.

The previous prime is 230278513. The next prime is 230278579. The reversal of 230278561 is 165872032.

It is a happy number.

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 230278561 - 221 = 228181409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230278501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178005 + ... + 179293.

It is an arithmetic number, because the mean of its divisors is an integer number (28970820).

Almost surely, 2230278561 is an apocalyptic number.

It is an amenable number.

230278561 is a deficient number, since it is larger than the sum of its proper divisors (1487999).

230278561 is a wasteful number, since it uses less digits than its factorization.

230278561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2303.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 230278561 is about 15174.9319932578. The cubic root of 230278561 is about 612.9398188247.

The spelling of 230278561 in words is "two hundred thirty million, two hundred seventy-eight thousand, five hundred sixty-one".

Divisors: 1 227 787 1289 178649 292603 1014443 230278561