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68482381 = 1113944789
BaseRepresentation
bin1000001010011…
…11010101001101
311202212021011111
410011033111031
5120012414011
610443452021
71461043042
oct405172515
9152767144
1068482381
1135724910
121ab27011
1311259b26
1491491c9
15602b121
hex414f54d

68482381 has 8 divisors (see below), whose sum is σ = 75247200. Its totient is φ = 61807440.

The previous prime is 68482373. The next prime is 68482397. The reversal of 68482381 is 18328486.

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

It is a cyclic number.

It is not a de Polignac number, because 68482381 - 23 = 68482373 is a prime.

It is a super-2 number, since 2×684823812 = 9379673014858322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68483381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20866 + ... + 23923.

It is an arithmetic number, because the mean of its divisors is an integer number (9405900).

Almost surely, 268482381 is an apocalyptic number.

It is an amenable number.

68482381 is a deficient number, since it is larger than the sum of its proper divisors (6764819).

68482381 is a wasteful number, since it uses less digits than its factorization.

68482381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44939.

The product of its digits is 73728, while the sum is 40.

The square root of 68482381 is about 8275.4082074542. The cubic root of 68482381 is about 409.1283902972.

It can be divided in two parts, 6848 and 2381, that added together give a palindrome (9229).

The spelling of 68482381 in words is "sixty-eight million, four hundred eighty-two thousand, three hundred eighty-one".

Divisors: 1 11 139 1529 44789 492679 6225671 68482381