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68733488 = 2419311727
BaseRepresentation
bin1000001100011…
…00101000110000
311210100000121202
410012030220300
5120043432423
610453110332
71463140115
oct406145060
9153300552
1068733488
113588653a
121b0283a8
1311317205
1491b290c
15607a728
hex418ca30

68733488 has 40 divisors (see below), whose sum is σ = 140824320. Its totient is φ = 32408640.

The previous prime is 68733487. The next prime is 68733503. The reversal of 68733488 is 88433786.

It is a super-2 number, since 2×687334882 = 9448584745292288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68733487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94181 + ... + 94907.

It is an arithmetic number, because the mean of its divisors is an integer number (3520608).

Almost surely, 268733488 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 68733488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70412160).

68733488 is an abundant number, since it is smaller than the sum of its proper divisors (72090832).

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

68733488 is a wasteful number, since it uses less digits than its factorization.

68733488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065 (or 1059 counting only the distinct ones).

The product of its digits is 774144, while the sum is 47.

The square root of 68733488 is about 8290.5662050309. The cubic root of 68733488 is about 409.6278359887.

The spelling of 68733488 in words is "sixty-eight million, seven hundred thirty-three thousand, four hundred eighty-eight".

Divisors: 1 2 4 8 16 19 38 76 152 304 311 622 727 1244 1454 2488 2908 4976 5816 5909 11632 11818 13813 23636 27626 47272 55252 94544 110504 221008 226097 452194 904388 1808776 3617552 4295843 8591686 17183372 34366744 68733488