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68116748 = 22719612099
BaseRepresentation
bin1000000111101…
…10000100001100
311202011200121112
410003312010030
5114414213443
610431551152
71454661050
oct403660414
9152150545
1068116748
11354a5137
121a98b4b8
131115c58b
149091c60
155ea7b18
hex40f610c

68116748 has 48 divisors (see below), whose sum is σ = 145824000. Its totient is φ = 27190080.

The previous prime is 68116747. The next prime is 68116751. The reversal of 68116748 is 84761186.

It is not an unprimeable number, because it can be changed into a prime (68116747) 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, 31403 + ... + 33501.

It is an arithmetic number, because the mean of its divisors is an integer number (3038000).

Almost surely, 268116748 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 68116748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72912000).

68116748 is an abundant number, since it is smaller than the sum of its proper divisors (77707252).

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

68116748 is a wasteful number, since it uses less digits than its factorization.

68116748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190 (or 2188 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

The square root of 68116748 is about 8253.2871027246. The cubic root of 68116748 is about 408.3989673570.

The spelling of 68116748 in words is "sixty-eight million, one hundred sixteen thousand, seven hundred forty-eight".

Divisors: 1 2 4 7 14 19 28 38 61 76 122 133 244 266 427 532 854 1159 1708 2099 2318 4198 4636 8113 8396 14693 16226 29386 32452 39881 58772 79762 128039 159524 256078 279167 512156 558334 896273 1116668 1792546 2432741 3585092 4865482 9730964 17029187 34058374 68116748