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68107408 = 248874799
BaseRepresentation
bin1000000111100…
…11110010010000
311202011012210121
410003303302100
5114413414113
610431440024
71454621605
oct403636220
9152135717
1068107408
1135499116
121a986014
1311158255
14908c6ac
155ea4e8d
hex40f3c90

68107408 has 20 divisors (see below), whose sum is σ = 132134400. Its totient is φ = 34008224.

The previous prime is 68107387. The next prime is 68107409. The reversal of 68107408 is 80470186.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68107409) 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, 11793 + ... + 16591.

It is an arithmetic number, because the mean of its divisors is an integer number (6606720).

Almost surely, 268107408 is an apocalyptic number.

It is an amenable number.

68107408 is a deficient number, since it is larger than the sum of its proper divisors (64026992).

68107408 is a wasteful number, since it uses less digits than its factorization.

68107408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5694 (or 5688 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 68107408 is about 8252.7212481702. The cubic root of 68107408 is about 408.3803002850.

The spelling of 68107408 in words is "sixty-eight million, one hundred seven thousand, four hundred eight".

Divisors: 1 2 4 8 16 887 1774 3548 4799 7096 9598 14192 19196 38392 76784 4256713 8513426 17026852 34053704 68107408