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230145 = 3567229
BaseRepresentation
bin111000001100000001
3102200200220
4320030001
524331040
64533253
71645656
oct701401
9380626
10230145
11147a03
12b1229
13809a6
145dc2d
15482d0
hex38301

230145 has 16 divisors (see below), whose sum is σ = 375360. Its totient is φ = 120384.

The previous prime is 230143. The next prime is 230149. The reversal of 230145 is 541032.

It is not a de Polignac number, because 230145 - 21 = 230143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 (230143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 891 + ... + 1119.

It is an arithmetic number, because the mean of its divisors is an integer number (23460).

2230145 is an apocalyptic number.

It is an amenable number.

230145 is a deficient number, since it is larger than the sum of its proper divisors (145215).

230145 is a wasteful number, since it uses less digits than its factorization.

230145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 230145 is about 479.7343014628. The cubic root of 230145 is about 61.2821294710.

Adding to 230145 its reverse (541032), we get a palindrome (771177).

It can be divided in two parts, 2301 and 45, that added together give a triangular number (2346 = T68).

The spelling of 230145 in words is "two hundred thirty thousand, one hundred forty-five".

Divisors: 1 3 5 15 67 201 229 335 687 1005 1145 3435 15343 46029 76715 230145