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68233188 = 2235686099
BaseRepresentation
bin1000001000100…
…10011111100100
311202101121100010
410010102133210
5114431430223
610434250220
71455654402
oct404223744
9152347303
1068233188
1135574671
121aa26970
13111a058a
1490c2472
155ecc393
hex41127e4

68233188 has 12 divisors (see below), whose sum is σ = 159210800. Its totient is φ = 22744392.

The previous prime is 68233147. The next prime is 68233211. The reversal of 68233188 is 88133286.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2843038 + ... + 2843061.

Almost surely, 268233188 is an apocalyptic number.

It is an amenable number.

68233188 is an abundant number, since it is smaller than the sum of its proper divisors (90977612).

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

68233188 is a wasteful number, since it uses less digits than its factorization.

68233188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5686106 (or 5686104 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 68233188 is about 8260.3382497329. The cubic root of 68233188 is about 408.6315430760.

It can be divided in two parts, 6823 and 3188, that added together give a triangular number (10011 = T141).

The spelling of 68233188 in words is "sixty-eight million, two hundred thirty-three thousand, one hundred eighty-eight".

Divisors: 1 2 3 4 6 12 5686099 11372198 17058297 22744396 34116594 68233188