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230971670 = 25154314969
BaseRepresentation
bin11011100010001…
…01100100010110
3121002121120120022
431301011210112
5433112043140
634530305142
75503140536
oct1561054426
9532546508
10230971670
11109417486
12654281b2
1338b0c637
14229654c6
15154260b5
hexdc45916

230971670 has 16 divisors (see below), whose sum is σ = 416046240. Its totient is φ = 92322624.

The previous prime is 230971633. The next prime is 230971679. The reversal of 230971670 is 76179032.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 230971670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230971679) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7946 + ... + 22914.

It is an arithmetic number, because the mean of its divisors is an integer number (26002890).

Almost surely, 2230971670 is an apocalyptic number.

230971670 is a deficient number, since it is larger than the sum of its proper divisors (185074570).

230971670 is a wasteful number, since it uses less digits than its factorization.

230971670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16519.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 230971670 is about 15197.7521364181. The cubic root of 230971670 is about 613.5541596796.

The spelling of 230971670 in words is "two hundred thirty million, nine hundred seventy-one thousand, six hundred seventy".

Divisors: 1 2 5 10 1543 3086 7715 14969 15430 29938 74845 149690 23097167 46194334 115485835 230971670