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67918068 = 22335631117
BaseRepresentation
bin1000000110001…
…01100011110100
311201210121002000
410003011203310
5114341334233
610423415300
71453202601
oct403054364
9151717060
1067918068
1135379939
121a8b4530
13110c000a
14903d6a8
155e68d13
hex40c58f4

67918068 has 48 divisors (see below), whose sum is σ = 176554560. Its totient is φ = 22578912.

The previous prime is 67918061. The next prime is 67918073. The reversal of 67918068 is 86081976.

It is a happy number.

It is a super-2 number, since 2×679180682 = 9225727921705248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67918061) 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 15 ways as a sum of consecutive naturals, for example, 60246 + ... + 61362.

It is an arithmetic number, because the mean of its divisors is an integer number (3678220).

Almost surely, 267918068 is an apocalyptic number.

It is an amenable number.

67918068 is an abundant number, since it is smaller than the sum of its proper divisors (108636492).

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

67918068 is a wasteful number, since it uses less digits than its factorization.

67918068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693 (or 1685 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 67918068 is about 8241.2418967046. The cubic root of 67918068 is about 408.0015138352.

The spelling of 67918068 in words is "sixty-seven million, nine hundred eighteen thousand, sixty-eight".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 108 563 1117 1126 1689 2234 2252 3351 3378 4468 5067 6702 6756 10053 10134 13404 15201 20106 20268 30159 30402 40212 60318 60804 120636 628871 1257742 1886613 2515484 3773226 5659839 7546452 11319678 16979517 22639356 33959034 67918068