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68973810 = 2354874721
BaseRepresentation
bin1000001110001…
…11010011110010
311210210020021120
410013013103302
5120124130220
610502203110
71465160553
oct407072362
9153706246
1068973810
1135a30054
121b123496
131139c709
14923632a
1560c6a40
hex41c74f2

68973810 has 32 divisors (see below), whose sum is σ = 165912192. Its totient is φ = 18351360.

The previous prime is 68973797. The next prime is 68973823. The reversal of 68973810 is 1837986.

It is an interprime number because it is at equal distance from previous prime (68973797) and next prime (68973823).

It is a super-2 number, since 2×689738102 = 9514772931832200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12250 + ... + 16970.

It is an arithmetic number, because the mean of its divisors is an integer number (5184756).

Almost surely, 268973810 is an apocalyptic number.

68973810 is an abundant number, since it is smaller than the sum of its proper divisors (96938382).

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

68973810 is a wasteful number, since it uses less digits than its factorization.

68973810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5218.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 68973810 is about 8305.0472605519. The cubic root of 68973810 is about 410.1046926777.

The spelling of 68973810 in words is "sixty-eight million, nine hundred seventy-three thousand, eight hundred ten".

Divisors: 1 2 3 5 6 10 15 30 487 974 1461 2435 2922 4721 4870 7305 9442 14163 14610 23605 28326 47210 70815 141630 2299127 4598254 6897381 11495635 13794762 22991270 34486905 68973810