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68966028 = 22328323081
BaseRepresentation
bin1000001110001…
…01011010001100
311210202211121100
410013011122030
5120123403103
610502103100
71465126065
oct407053214
9153684540
1068966028
1135a2521a
121b11aa90
1311399001
14923356c
1560c45a3
hex41c568c

68966028 has 36 divisors (see below), whose sum is σ = 176438808. Its totient is φ = 22710720.

The previous prime is 68966017. The next prime is 68966081. The reversal of 68966028 is 82066986.

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 8553 + ... + 14528.

It is an arithmetic number, because the mean of its divisors is an integer number (4901078).

Almost surely, 268966028 is an apocalyptic number.

It is an amenable number.

68966028 is an abundant number, since it is smaller than the sum of its proper divisors (107472780).

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

68966028 is a wasteful number, since it uses less digits than its factorization.

68966028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23174 (or 23169 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 68966028 is about 8304.5787370583. The cubic root of 68966028 is about 410.0892686844.

The spelling of 68966028 in words is "sixty-eight million, nine hundred sixty-six thousand, twenty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 83 166 249 332 498 747 996 1494 2988 23081 46162 69243 92324 138486 207729 276972 415458 830916 1915723 3831446 5747169 7662892 11494338 17241507 22988676 34483014 68966028