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68076290 = 256807629
BaseRepresentation
bin1000000111011…
…00001100000010
311202002122010002
410003230030002
5114411420130
610431040002
71454432102
oct403541402
9152078102
1068076290
11354777a7
121a970002
1311147039
149081202
155e9ab45
hex40ec302

68076290 has 8 divisors (see below), whose sum is σ = 122537340. Its totient is φ = 27230512.

The previous prime is 68076241. The next prime is 68076301. The reversal of 68076290 is 9267086.

It can be written as a sum of positive squares in 2 ways, for example, as 67190809 + 885481 = 8197^2 + 941^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3403805 + ... + 3403824.

Almost surely, 268076290 is an apocalyptic number.

68076290 is a deficient number, since it is larger than the sum of its proper divisors (54461050).

68076290 is a wasteful number, since it uses less digits than its factorization.

68076290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6807636.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 68076290 is about 8250.8357152473. The cubic root of 68076290 is about 408.3180950397.

The spelling of 68076290 in words is "sixty-eight million, seventy-six thousand, two hundred ninety".

Divisors: 1 2 5 10 6807629 13615258 34038145 68076290