Search a number
-
+
230646251 = 1129723029
BaseRepresentation
bin11011011111101…
…10000111101011
3121002000001011202
431233312013223
5433021140001
634515314415
75500314023
oct1557660753
9532001152
10230646251
11109214a40
12652aba0b
1338a27494
14228bca83
15153ae96b
hexdbf61eb

230646251 has 8 divisors (see below), whose sum is σ = 260290800. Its totient is φ = 202447840.

The previous prime is 230646239. The next prime is 230646287. The reversal of 230646251 is 152646032.

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

It is not a de Polignac number, because 230646251 - 210 = 230645227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (230646211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361196 + ... + 361833.

It is an arithmetic number, because the mean of its divisors is an integer number (32536350).

Almost surely, 2230646251 is an apocalyptic number.

230646251 is a deficient number, since it is larger than the sum of its proper divisors (29644549).

230646251 is a wasteful number, since it uses less digits than its factorization.

230646251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723069.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 230646251 is about 15187.0422070922. The cubic root of 230646251 is about 613.2658760942.

The spelling of 230646251 in words is "two hundred thirty million, six hundred forty-six thousand, two hundred fifty-one".

Divisors: 1 11 29 319 723029 7953319 20967841 230646251