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68293652 = 2272348437
BaseRepresentation
bin1000001001000…
…01010000010100
311202111200021112
410010201100110
5114440344102
610435434152
71456325600
oct404412024
9152450245
1068293652
1135606039
121aa55958
13111c1c5b
1490da500
155ee0252
hex4121414

68293652 has 18 divisors (see below), whose sum is σ = 139026762. Its totient is φ = 29268624.

The previous prime is 68293597. The next prime is 68293661. The reversal of 68293652 is 25639286.

It can be written as a sum of positive squares in only one way, i.e., 67305616 + 988036 = 8204^2 + 994^2 .

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 174023 + ... + 174414.

It is an arithmetic number, because the mean of its divisors is an integer number (7723709).

Almost surely, 268293652 is an apocalyptic number.

It is an amenable number.

68293652 is an abundant number, since it is smaller than the sum of its proper divisors (70733110).

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

68293652 is a wasteful number, since it uses less digits than its factorization.

68293652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348455 (or 348446 counting only the distinct ones).

The product of its digits is 155520, while the sum is 41.

The square root of 68293652 is about 8263.9973378505. The cubic root of 68293652 is about 408.7522087122.

The spelling of 68293652 in words is "sixty-eight million, two hundred ninety-three thousand, six hundred fifty-two".

Divisors: 1 2 4 7 14 28 49 98 196 348437 696874 1393748 2439059 4878118 9756236 17073413 34146826 68293652