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230218628 = 22263218839
BaseRepresentation
bin11011011100011…
…01101110000100
3121001012022120212
431232031232010
5432413444003
634502214552
75463553223
oct1556155604
9531168525
10230218628
11108a52732
1265124458
1338907953
142280acba
1515327dd8
hexdb8db84

230218628 has 12 divisors (see below), whose sum is σ = 404416320. Its totient is φ = 114671112.

The previous prime is 230218627. The next prime is 230218631. The reversal of 230218628 is 826812032.

It is a junction number, because it is equal to n+sod(n) for n = 230218594 and 230218603.

It is not an unprimeable number, because it can be changed into a prime (230218621) 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, 108368 + ... + 110471.

It is an arithmetic number, because the mean of its divisors is an integer number (33701360).

Almost surely, 2230218628 is an apocalyptic number.

It is an amenable number.

230218628 is a deficient number, since it is larger than the sum of its proper divisors (174197692).

230218628 is a wasteful number, since it uses less digits than its factorization.

230218628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219106 (or 219104 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 230218628 is about 15172.9571277322. The cubic root of 230218628 is about 612.8866390158.

The spelling of 230218628 in words is "two hundred thirty million, two hundred eighteen thousand, six hundred twenty-eight".

Divisors: 1 2 4 263 526 1052 218839 437678 875356 57554657 115109314 230218628