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67388 = 2217991
BaseRepresentation
bin10000011100111100
310102102212
4100130330
54124023
61235552
7400316
oct203474
9112385
1067388
11466a2
1232bb8
1324899
141a7b6
1514e78
hex1073c

67388 has 12 divisors (see below), whose sum is σ = 124992. Its totient is φ = 31680.

The previous prime is 67369. The next prime is 67391. The reversal of 67388 is 88376.

It is a super-2 number, since 2×673882 = 9082285088, which contains 22 as substring.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

67388 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428 + ... + 563.

It is an arithmetic number, because the mean of its divisors is an integer number (10416).

267388 is an apocalyptic number.

67388 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

67388 is a deficient number, since it is larger than the sum of its proper divisors (57604).

67388 is a wasteful number, since it uses less digits than its factorization.

67388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012 (or 1010 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 67388 is about 259.5919875497. The cubic root of 67388 is about 40.6937321693.

The spelling of 67388 in words is "sixty-seven thousand, three hundred eighty-eight".

Divisors: 1 2 4 17 34 68 991 1982 3964 16847 33694 67388