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230785 = 5101457
BaseRepresentation
bin111000010110000001
3102201120121
4320112001
524341120
64540241
71650562
oct702601
9381517
10230785
11148435
12b1681
1381079
1460169
15485aa
hex38581

230785 has 8 divisors (see below), whose sum is σ = 280296. Its totient is φ = 182400.

The previous prime is 230779. The next prime is 230807. The reversal of 230785 is 587032.

It can be written as a sum of positive squares in 4 ways, for example, as 123201 + 107584 = 351^2 + 328^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 230785 - 29 = 230273 is a prime.

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

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277 + ... + 733.

It is an arithmetic number, because the mean of its divisors is an integer number (35037).

2230785 is an apocalyptic number.

It is an amenable number.

230785 is a deficient number, since it is larger than the sum of its proper divisors (49511).

230785 is a wasteful number, since it uses less digits than its factorization.

230785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 230785 is about 480.4008742706. The cubic root of 230785 is about 61.3388824794.

The spelling of 230785 in words is "two hundred thirty thousand, seven hundred eighty-five".

Divisors: 1 5 101 457 505 2285 46157 230785