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68383356 = 22319535659
BaseRepresentation
bin1000001001101…
…11001001111100
311202200020022220
410010313021330
5120001231411
610441405340
71460151246
oct404671174
9152606286
1068383356
1135667478
121aa99850
1311223a32
149121096
15600bb06
hex413727c

68383356 has 48 divisors (see below), whose sum is σ = 171158400. Its totient is φ = 21183552.

The previous prime is 68383319. The next prime is 68383361. The reversal of 68383356 is 65338386.

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 15 ways as a sum of consecutive naturals, for example, 9255 + ... + 14913.

It is an arithmetic number, because the mean of its divisors is an integer number (3565800).

Almost surely, 268383356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68383356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85579200).

68383356 is an abundant number, since it is smaller than the sum of its proper divisors (102775044).

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

68383356 is a wasteful number, since it uses less digits than its factorization.

68383356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5738 (or 5736 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The square root of 68383356 is about 8269.4229544751. The cubic root of 68383356 is about 408.9310963287.

The spelling of 68383356 in words is "sixty-eight million, three hundred eighty-three thousand, three hundred fifty-six".

Divisors: 1 2 3 4 6 12 19 38 53 57 76 106 114 159 212 228 318 636 1007 2014 3021 4028 5659 6042 11318 12084 16977 22636 33954 67908 107521 215042 299927 322563 430084 599854 645126 899781 1199708 1290252 1799562 3599124 5698613 11397226 17095839 22794452 34191678 68383356