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230787258 = 23132958811
BaseRepresentation
bin11011100000110…
…00100010111010
3121002021012121020
431300120202322
5433040143013
634522323310
75501442102
oct1560304272
9532235536
10230787258
11109300979
1265359536
1338a76710
1422918202
15153db623
hexdc188ba

230787258 has 16 divisors (see below), whose sum is σ = 497080416. Its totient is φ = 71011440.

The previous prime is 230787253. The next prime is 230787289. The reversal of 230787258 is 852787032.

230787258 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (230787251) 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, 1479328 + ... + 1479483.

It is an arithmetic number, because the mean of its divisors is an integer number (31067526).

Almost surely, 2230787258 is an apocalyptic number.

230787258 is an abundant number, since it is smaller than the sum of its proper divisors (266293158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

230787258 is a wasteful number, since it uses less digits than its factorization.

230787258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2958829.

The product of its (nonzero) digits is 188160, while the sum is 42.

The square root of 230787258 is about 15191.6838434717. The cubic root of 230787258 is about 613.3908252529.

The spelling of 230787258 in words is "two hundred thirty million, seven hundred eighty-seven thousand, two hundred fifty-eight".

Divisors: 1 2 3 6 13 26 39 78 2958811 5917622 8876433 17752866 38464543 76929086 115393629 230787258