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68223584 = 25111317877
BaseRepresentation
bin1000001000100…
…00001001100000
311202101010011102
410010100021200
5114431123314
610434133532
71455614402
oct404201140
9152333142
1068223584
1135568430
121aa212a8
13111990b0
1490bcb72
155ec95de
hex4110260

68223584 has 96 divisors (see below), whose sum is σ = 167269536. Its totient is φ = 26910720.

The previous prime is 68223583. The next prime is 68223587. The reversal of 68223584 is 48532286.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68223583) 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, 77354 + ... + 78230.

It is an arithmetic number, because the mean of its divisors is an integer number (1742391).

Almost surely, 268223584 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 68223584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83634768).

68223584 is an abundant number, since it is smaller than the sum of its proper divisors (99045952).

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

68223584 is a wasteful number, since it uses less digits than its factorization.

68223584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928 (or 920 counting only the distinct ones).

The product of its digits is 92160, while the sum is 38.

The square root of 68223584 is about 8259.7568971490. The cubic root of 68223584 is about 408.6123701896.

The spelling of 68223584 in words is "sixty-eight million, two hundred twenty-three thousand, five hundred eighty-four".

Divisors: 1 2 4 8 11 13 16 17 22 26 32 34 44 52 68 88 104 136 143 176 187 208 221 272 286 352 374 416 442 544 572 748 877 884 1144 1496 1754 1768 2288 2431 2992 3508 3536 4576 4862 5984 7016 7072 9647 9724 11401 14032 14909 19294 19448 22802 28064 29818 38588 38896 45604 59636 77176 77792 91208 119272 125411 154352 163999 182416 193817 238544 250822 308704 327998 364832 387634 477088 501644 655996 775268 1003288 1311992 1550536 2006576 2131987 2623984 3101072 4013152 4263974 5247968 6202144 8527948 17055896 34111792 68223584