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230304222 = 23817551
BaseRepresentation
bin11011011101000…
…10100111011110
3121001100200000000
431232202213132
5432424213342
634504115130
75464360611
oct1556424736
9531320000
10230304222
11109000a75
1265165aa6
13389378b5
1422830178
151534344c
hexdba29de

230304222 has 36 divisors (see below), whose sum is σ = 518187696. Its totient is φ = 76763700.

The previous prime is 230304211. The next prime is 230304227. The reversal of 230304222 is 222403032.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 230304195 and 230304204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230304227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4347 + ... + 21897.

Almost surely, 2230304222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 230304222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259093848).

230304222 is an abundant number, since it is smaller than the sum of its proper divisors (287883474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

230304222 is an frugal number, since it uses more digits than its factorization.

230304222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17577 (or 17556 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 230304222 is about 15175.7774759648. Note that the first 3 decimals coincide. The cubic root of 230304222 is about 612.9625855475.

Adding to 230304222 its reverse (222403032), we get a palindrome (452707254).

The spelling of 230304222 in words is "two hundred thirty million, three hundred four thousand, two hundred twenty-two".

Divisors: 1 2 3 6 9 18 27 54 81 162 243 486 729 1458 2187 4374 6561 13122 17551 35102 52653 105306 157959 315918 473877 947754 1421631 2843262 4264893 8529786 12794679 25589358 38384037 76768074 115152111 230304222