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306212 = 22372069
BaseRepresentation
bin1001010110000100100
3120120001012
41022300210
534244322
610321352
72413514
oct1126044
9516035
10306212
1119a075
12129258
13a94ba
147d844
1560ae2
hex4ac24

306212 has 12 divisors (see below), whose sum is σ = 550620. Its totient is φ = 148896.

The previous prime is 306209. The next prime is 306239. The reversal of 306212 is 212603.

It can be written as a sum of positive squares in 2 ways, for example, as 164836 + 141376 = 406^2 + 376^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 306212.

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 3 ways as a sum of consecutive naturals, for example, 887 + ... + 1182.

It is an arithmetic number, because the mean of its divisors is an integer number (45885).

2306212 is an apocalyptic number.

It is an amenable number.

306212 is a deficient number, since it is larger than the sum of its proper divisors (244408).

306212 is a wasteful number, since it uses less digits than its factorization.

306212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110 (or 2108 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 306212 is about 553.3642561641. The cubic root of 306212 is about 67.4021994721.

Adding to 306212 its reverse (212603), we get a palindrome (518815).

The spelling of 306212 in words is "three hundred six thousand, two hundred twelve".

Divisors: 1 2 4 37 74 148 2069 4138 8276 76553 153106 306212