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68818108 = 22171012031
BaseRepresentation
bin1000001101000…
…01010010111100
311210111022200211
410012201102330
5120104134413
610455002204
71463641612
oct406412274
9153438624
1068818108
1135934077
121b069364
1311346898
1491d56b2
15609583d
hex41a14bc

68818108 has 12 divisors (see below), whose sum is σ = 127516032. Its totient is φ = 32384960.

The previous prime is 68818097. The next prime is 68818121. The reversal of 68818108 is 80181886.

It is a congruent number.

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, 505948 + ... + 506083.

It is an arithmetic number, because the mean of its divisors is an integer number (10626336).

Almost surely, 268818108 is an apocalyptic number.

68818108 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

68818108 is a deficient number, since it is larger than the sum of its proper divisors (58697924).

68818108 is a wasteful number, since it uses less digits than its factorization.

68818108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012052 (or 1012050 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 40.

The square root of 68818108 is about 8295.6680261447. The cubic root of 68818108 is about 409.7958690365.

The spelling of 68818108 in words is "sixty-eight million, eight hundred eighteen thousand, one hundred eight".

Divisors: 1 2 4 17 34 68 1012031 2024062 4048124 17204527 34409054 68818108