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68312 = 238539
BaseRepresentation
bin10000101011011000
310110201002
4100223120
54141222
61244132
7403106
oct205330
9113632
1068312
1147362
1233648
132512a
141ac76
1515392
hex10ad8

68312 has 8 divisors (see below), whose sum is σ = 128100. Its totient is φ = 34152.

The previous prime is 68311. The next prime is 68329. The reversal of 68312 is 21386.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68311) by changing a digit.

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 as a sum of consecutive naturals, namely, 4262 + ... + 4277.

268312 is an apocalyptic number.

It is an amenable number.

68312 is a deficient number, since it is larger than the sum of its proper divisors (59788).

68312 is a wasteful number, since it uses less digits than its factorization.

68312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8545 (or 8541 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 68312 is about 261.3656442611. The cubic root of 68312 is about 40.8788811011.

Adding to 68312 its reverse (21386), we get a palindrome (89698).

The spelling of 68312 in words is "sixty-eight thousand, three hundred twelve".

Divisors: 1 2 4 8 8539 17078 34156 68312