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68233688 = 2334924439
BaseRepresentation
bin1000001000100…
…10100111011000
311202101122000122
410010102213120
5114431434223
610434252412
71455656015
oct404224730
9152348018
1068233688
1135574a86
121aa27108
13111a0883
1490c270c
155ecc5c8
hex41129d8

68233688 has 16 divisors (see below), whose sum is σ = 128310000. Its totient is φ = 34017696.

The previous prime is 68233657. The next prime is 68233691. The reversal of 68233688 is 88633286.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9428 + ... + 15011.

It is an arithmetic number, because the mean of its divisors is an integer number (8019375).

Almost surely, 268233688 is an apocalyptic number.

It is an amenable number.

68233688 is a deficient number, since it is larger than the sum of its proper divisors (60076312).

68233688 is a wasteful number, since it uses less digits than its factorization.

68233688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24794 (or 24790 counting only the distinct ones).

The product of its digits is 331776, while the sum is 44.

The square root of 68233688 is about 8260.3685147819. The cubic root of 68233688 is about 408.6325411986.

It can be divided in two parts, 68233 and 688, that added together give a cube (68921 = 413).

The spelling of 68233688 in words is "sixty-eight million, two hundred thirty-three thousand, six hundred eighty-eight".

Divisors: 1 2 4 8 349 698 1396 2792 24439 48878 97756 195512 8529211 17058422 34116844 68233688