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230307589 = 297941641
BaseRepresentation
bin11011011101000…
…11011100000101
3121001100211121201
431232203130011
5432424320324
634504142501
75464403461
oct1556433405
9531324551
10230307589
11109003556
1265167a31
13389392a5
14228314a1
1515344444
hexdba3705

230307589 has 4 divisors (see below), whose sum is σ = 238249260. Its totient is φ = 222365920.

The previous prime is 230307557. The next prime is 230307601. The reversal of 230307589 is 985703032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52085089 + 178222500 = 7217^2 + 13350^2 .

It is a cyclic number.

It is not a de Polignac number, because 230307589 - 25 = 230307557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230307509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3970792 + ... + 3970849.

It is an arithmetic number, because the mean of its divisors is an integer number (59562315).

Almost surely, 2230307589 is an apocalyptic number.

230307589 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

230307589 is a deficient number, since it is larger than the sum of its proper divisors (7941671).

230307589 is an equidigital number, since it uses as much as digits as its factorization.

230307589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7941670.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 230307589 is about 15175.8884089203. Note that the first 3 decimals coincide. The cubic root of 230307589 is about 612.9655726616.

The spelling of 230307589 in words is "two hundred thirty million, three hundred seven thousand, five hundred eighty-nine".

Divisors: 1 29 7941641 230307589