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230136566 = 21115766629
BaseRepresentation
bin11011011011110…
…01101011110110
3121001001011000112
431231321223312
5432403332231
634500343022
75463062042
oct1555715366
9531034015
10230136566
111089a7010
12650a4a72
13388a94aa
14227c9022
151530d92b
hexdb79af6

230136566 has 16 divisors (see below), whose sum is σ = 378991440. Its totient is φ = 103939680.

The previous prime is 230136553. The next prime is 230136587. The reversal of 230136566 is 665631032.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29861 + ... + 36768.

It is an arithmetic number, because the mean of its divisors is an integer number (23686965).

Almost surely, 2230136566 is an apocalyptic number.

230136566 is a deficient number, since it is larger than the sum of its proper divisors (148854874).

230136566 is a wasteful number, since it uses less digits than its factorization.

230136566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66799.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 230136566 is about 15170.2526676387. The cubic root of 230136566 is about 612.8138087083.

Adding to 230136566 its reverse (665631032), we get a palindrome (895767598).

The spelling of 230136566 in words is "two hundred thirty million, one hundred thirty-six thousand, five hundred sixty-six".

Divisors: 1 2 11 22 157 314 1727 3454 66629 133258 732919 1465838 10460753 20921506 115068283 230136566