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68468028 = 2238368743
BaseRepresentation
bin1000001010010…
…11110100111100
311202211112110220
410011023310330
5120011434103
610443301340
71460653146
oct405136474
9152745426
1068468028
1135715052
121ab1a850
1311253435
149143c96
156026c53
hex414bd3c

68468028 has 24 divisors (see below), whose sum is σ = 161685888. Its totient is φ = 22547376.

The previous prime is 68468017. The next prime is 68468041. The reversal of 68468028 is 82086486.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 33376 + ... + 35367.

It is an arithmetic number, because the mean of its divisors is an integer number (6736912).

Almost surely, 268468028 is an apocalyptic number.

It is an amenable number.

68468028 is an abundant number, since it is smaller than the sum of its proper divisors (93217860).

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

68468028 is a wasteful number, since it uses less digits than its factorization.

68468028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68833 (or 68831 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 68468028 is about 8274.5409540349. The cubic root of 68468028 is about 409.0998056696.

The spelling of 68468028 in words is "sixty-eight million, four hundred sixty-eight thousand, twenty-eight".

Divisors: 1 2 3 4 6 12 83 166 249 332 498 996 68743 137486 206229 274972 412458 824916 5705669 11411338 17117007 22822676 34234014 68468028