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68174216 = 231117199229
BaseRepresentation
bin1000001000001…
…00000110001000
311202021121102222
410010010012020
5114423033331
610433113212
71455320435
oct404040610
9152247388
1068174216
1135534330
121a9b8808
131117c796
1490a8b8c
155eb9b7b
hex4104188

68174216 has 64 divisors (see below), whose sum is σ = 149040000. Its totient is φ = 28892160.

The previous prime is 68174213. The next prime is 68174237. The reversal of 68174216 is 61247186.

It is not an unprimeable number, because it can be changed into a prime (68174213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297590 + ... + 297818.

It is an arithmetic number, because the mean of its divisors is an integer number (2328750).

Almost surely, 268174216 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 68174216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74520000).

68174216 is an abundant number, since it is smaller than the sum of its proper divisors (80865784).

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

68174216 is a wasteful number, since it uses less digits than its factorization.

68174216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462 (or 458 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 68174216 is about 8256.7678906458. The cubic root of 68174216 is about 408.5137862788.

The spelling of 68174216 in words is "sixty-eight million, one hundred seventy-four thousand, two hundred sixteen".

Divisors: 1 2 4 8 11 17 22 34 44 68 88 136 187 199 229 374 398 458 748 796 916 1496 1592 1832 2189 2519 3383 3893 4378 5038 6766 7786 8756 10076 13532 15572 17512 20152 27064 31144 37213 42823 45571 74426 85646 91142 148852 171292 182284 297704 342584 364568 501281 774707 1002562 1549414 2005124 3098828 4010248 6197656 8521777 17043554 34087108 68174216