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68641332 = 2238368917
BaseRepresentation
bin1000001011101…
…10001000110100
311210011100012120
410011312020310
5120033010312
610451115540
71462304334
oct405661064
9153140176
1068641332
1135823281
121aba2bb0
13112b4296
14918b0c4
15605d28c
hex4176234

68641332 has 24 divisors (see below), whose sum is σ = 162095136. Its totient is φ = 22604448.

The previous prime is 68641303. The next prime is 68641337. The reversal of 68641332 is 23314686.

It is a junction number, because it is equal to n+sod(n) for n = 68641293 and 68641302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68641337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33463 + ... + 35454.

It is an arithmetic number, because the mean of its divisors is an integer number (6753964).

Almost surely, 268641332 is an apocalyptic number.

It is an amenable number.

68641332 is an abundant number, since it is smaller than the sum of its proper divisors (93453804).

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

68641332 is a wasteful number, since it uses less digits than its factorization.

68641332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69007 (or 69005 counting only the distinct ones).

The product of its digits is 20736, while the sum is 33.

The square root of 68641332 is about 8285.0064574507. The cubic root of 68641332 is about 409.4446814703. Note that the first 3 decimals are identical.

The spelling of 68641332 in words is "sixty-eight million, six hundred forty-one thousand, three hundred thirty-two".

Divisors: 1 2 3 4 6 12 83 166 249 332 498 996 68917 137834 206751 275668 413502 827004 5720111 11440222 17160333 22880444 34320666 68641332