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68423454 = 2351112799
BaseRepresentation
bin1000001010000…
…00111100011110
311202202021100000
410011000330132
5120004022304
610442315130
71460406201
oct405007436
9152667300
1068423454
1135694610
121aab8aa6
1311239068
149131938
156018939
hex4140f1e

68423454 has 48 divisors (see below), whose sum is σ = 167731200. Its totient is φ = 20732760.

The previous prime is 68423447. The next prime is 68423461. The reversal of 68423454 is 45432486.

It is an interprime number because it is at equal distance from previous prime (68423447) and next prime (68423461).

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 23 ways as a sum of consecutive naturals, for example, 1054 + ... + 11745.

It is an arithmetic number, because the mean of its divisors is an integer number (3494400).

Almost surely, 268423454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68423454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83865600).

68423454 is an abundant number, since it is smaller than the sum of its proper divisors (99307746).

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

68423454 is a wasteful number, since it uses less digits than its factorization.

68423454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12827 (or 12815 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 68423454 is about 8271.8470730545. The cubic root of 68423454 is about 409.0110091229.

It can be divided in two parts, 6842 and 3454, that added together give a triangular number (10296 = T143).

The spelling of 68423454 in words is "sixty-eight million, four hundred twenty-three thousand, four hundred fifty-four".

Divisors: 1 2 3 6 9 11 18 22 27 33 54 66 81 99 162 198 243 297 486 594 891 1782 2673 5346 12799 25598 38397 76794 115191 140789 230382 281578 345573 422367 691146 844734 1036719 1267101 2073438 2534202 3110157 3801303 6220314 7602606 11403909 22807818 34211727 68423454