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67238672 = 2417247201
BaseRepresentation
bin1000000000111…
…11101100010000
311200112002010012
410000133230100
5114203114142
610401054052
71444343054
oct400375420
9150462105
1067238672
1134a55456
121a627328
1310c129c7
148d03c64
155d82882
hex401fb10

67238672 has 20 divisors (see below), whose sum is σ = 137938716. Its totient is φ = 31641600.

The previous prime is 67238671. The next prime is 67238681. The reversal of 67238672 is 27683276.

It can be written as a sum of positive squares in 2 ways, for example, as 45373696 + 21864976 = 6736^2 + 4676^2 .

It is not an unprimeable number, because it can be changed into a prime (67238671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123329 + ... + 123872.

Almost surely, 267238672 is an apocalyptic number.

It is an amenable number.

67238672 is an abundant number, since it is smaller than the sum of its proper divisors (70700044).

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

67238672 is a wasteful number, since it uses less digits than its factorization.

67238672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247226 (or 247220 counting only the distinct ones).

The product of its digits is 169344, while the sum is 41.

The square root of 67238672 is about 8199.9190239904. The cubic root of 67238672 is about 406.6365160244.

The spelling of 67238672 in words is "sixty-seven million, two hundred thirty-eight thousand, six hundred seventy-two".

Divisors: 1 2 4 8 16 17 34 68 136 272 247201 494402 988804 1977608 3955216 4202417 8404834 16809668 33619336 67238672