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68683552 = 257595197
BaseRepresentation
bin1000001100000…
…00011100100000
311210020111010021
410012000130200
5120040333202
610452043224
71462541410
oct406003440
9153214107
1068683552
1135851a73
121b003514
13112ca572
14919c640
15606aa37
hex4180720

68683552 has 48 divisors (see below), whose sum is σ = 157187520. Its totient is φ = 28931328.

The previous prime is 68683529. The next prime is 68683561. The reversal of 68683552 is 25538686.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 68683499 and 68683508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10618 + ... + 15814.

It is an arithmetic number, because the mean of its divisors is an integer number (3274740).

Almost surely, 268683552 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 68683552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78593760).

68683552 is an abundant number, since it is smaller than the sum of its proper divisors (88503968).

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

68683552 is a wasteful number, since it uses less digits than its factorization.

68683552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5273 (or 5265 counting only the distinct ones).

The product of its digits is 345600, while the sum is 43.

The square root of 68683552 is about 8287.5540420561. The cubic root of 68683552 is about 409.5286115210.

The spelling of 68683552 in words is "sixty-eight million, six hundred eighty-three thousand, five hundred fifty-two".

Divisors: 1 2 4 7 8 14 16 28 32 56 59 112 118 224 236 413 472 826 944 1652 1888 3304 5197 6608 10394 13216 20788 36379 41576 72758 83152 145516 166304 291032 306623 582064 613246 1164128 1226492 2146361 2452984 4292722 4905968 8585444 9811936 17170888 34341776 68683552