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68283628 = 22717167859
BaseRepresentation
bin1000001000111…
…10110011101100
311202111011112021
410010132303230
5114440034003
610435315524
71456254430
oct404366354
9152434467
1068283628
11355a9556
121aa4bba4
13111ba51a
1490d69c0
155edc2bd
hex411ecec

68283628 has 48 divisors (see below), whose sum is σ = 145635840. Its totient is φ = 27346176.

The previous prime is 68283623. The next prime is 68283629. The reversal of 68283628 is 82638286.

It is not an unprimeable number, because it can be changed into a prime (68283623) by changing a digit.

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, 79063 + ... + 79921.

It is an arithmetic number, because the mean of its divisors is an integer number (3034080).

Almost surely, 268283628 is an apocalyptic number.

68283628 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68283628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72817920).

68283628 is an abundant number, since it is smaller than the sum of its proper divisors (77352212).

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

68283628 is a wasteful number, since it uses less digits than its factorization.

68283628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054 (or 1052 counting only the distinct ones).

The product of its digits is 221184, while the sum is 43.

The square root of 68283628 is about 8263.3908294356. The cubic root of 68283628 is about 408.7322091344.

The spelling of 68283628 in words is "sixty-eight million, two hundred eighty-three thousand, six hundred twenty-eight".

Divisors: 1 2 4 7 14 17 28 34 68 119 167 238 334 476 668 859 1169 1718 2338 2839 3436 4676 5678 6013 11356 12026 14603 19873 24052 29206 39746 58412 79492 102221 143453 204442 286906 408884 573812 1004171 2008342 2438701 4016684 4877402 9754804 17070907 34141814 68283628