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67683980 = 22571337189
BaseRepresentation
bin1000000100011…
…00011010001100
311201100200222002
410002030122030
5114311341410
610414411432
71451206250
oct402143214
9151320862
1067683980
1135229a81
121a800b78
131103a5c0
148dbc260
155e1e7a5
hex408c68c

67683980 has 48 divisors (see below), whose sum is σ = 174941760. Its totient is φ = 21420288.

The previous prime is 67683977. The next prime is 67683991. The reversal of 67683980 is 8938676.

It is a super-2 number, since 2×676839802 = 9162242297280800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16775 + ... + 20414.

It is an arithmetic number, because the mean of its divisors is an integer number (3644620).

Almost surely, 267683980 is an apocalyptic number.

It is an amenable number.

67683980 is an abundant number, since it is smaller than the sum of its proper divisors (107257780).

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

67683980 is a wasteful number, since it uses less digits than its factorization.

67683980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37218 (or 37216 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 67683980 is about 8227.0274097027. The cubic root of 67683980 is about 407.5322317587.

The spelling of 67683980 in words is "sixty-seven million, six hundred eighty-three thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 13 14 20 26 28 35 52 65 70 91 130 140 182 260 364 455 910 1820 37189 74378 148756 185945 260323 371890 483457 520646 743780 966914 1041292 1301615 1933828 2417285 2603230 3384199 4834570 5206460 6768398 9669140 13536796 16920995 33841990 67683980