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68031914 = 2109312073
BaseRepresentation
bin1000000111000…
…01010110101010
311202000101020112
410003201112222
5114404010124
610430054322
71454155526
oct403412652
9152011215
1068031914
1135447425
121a94a3a2
131112ca92
14906cd86
155e8c90e
hex40e15aa

68031914 has 8 divisors (see below), whose sum is σ = 102984420. Its totient is φ = 33703776.

The previous prime is 68031911. The next prime is 68031947. The reversal of 68031914 is 41913086.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 65885689 + 2146225 = 8117^2 + 1465^2 .

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

It is not an unprimeable number, because it can be changed into a prime (68031911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155819 + ... + 156254.

Almost surely, 268031914 is an apocalyptic number.

68031914 is a deficient number, since it is larger than the sum of its proper divisors (34952506).

68031914 is a wasteful number, since it uses less digits than its factorization.

68031914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312184.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 68031914 is about 8248.1460947294. The cubic root of 68031914 is about 408.2293540976.

The spelling of 68031914 in words is "sixty-eight million, thirty-one thousand, nine hundred fourteen".

Divisors: 1 2 109 218 312073 624146 34015957 68031914