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230556865 = 57113371777
BaseRepresentation
bin11011011111000…
…00010011000001
3121001211111120011
431233200103001
5433010304430
634513344521
75466462310
oct1557402301
9531744504
10230556865
11109163870
1265268141
13389c58a6
1422898277
151539322a
hexdbe04c1

230556865 has 32 divisors (see below), whose sum is σ = 346155264. Its totient is φ = 143216640.

The previous prime is 230556857. The next prime is 230556871. The reversal of 230556865 is 568655032.

It is not a de Polignac number, because 230556865 - 23 = 230556857 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128857 + ... + 130633.

It is an arithmetic number, because the mean of its divisors is an integer number (10817352).

Almost surely, 2230556865 is an apocalyptic number.

It is an amenable number.

230556865 is a deficient number, since it is larger than the sum of its proper divisors (115598399).

230556865 is a wasteful number, since it uses less digits than its factorization.

230556865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137.

The product of its (nonzero) digits is 216000, while the sum is 40.

The square root of 230556865 is about 15184.0990842394. The cubic root of 230556865 is about 613.1866429738.

The spelling of 230556865 in words is "two hundred thirty million, five hundred fifty-six thousand, eight hundred sixty-five".

Divisors: 1 5 7 11 35 55 77 337 385 1685 1777 2359 3707 8885 11795 12439 18535 19547 25949 62195 97735 129745 136829 598849 684145 2994245 4191943 6587339 20959715 32936695 46111373 230556865