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67242660 = 22351120711
BaseRepresentation
bin1000000001000…
…00101010100100
311200112021120220
410000200222210
5114203231120
610401124340
71444360512
oct400405244
9150467526
1067242660
1134a58451
121a6296b0
1310c14774
148d054b2
155d83b40
hex4020aa4

67242660 has 24 divisors (see below), whose sum is σ = 188279616. Its totient is φ = 17931360.

The previous prime is 67242647. The next prime is 67242661. The reversal of 67242660 is 6624276.

It is not an unprimeable number, because it can be changed into a prime (67242661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560296 + ... + 560415.

It is an arithmetic number, because the mean of its divisors is an integer number (7844984).

Almost surely, 267242660 is an apocalyptic number.

67242660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67242660 is an abundant number, since it is smaller than the sum of its proper divisors (121036956).

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

67242660 is a wasteful number, since it uses less digits than its factorization.

67242660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120723 (or 1120721 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 67242660 is about 8200.1621935179. The cubic root of 67242660 is about 406.6445552193.

The spelling of 67242660 in words is "sixty-seven million, two hundred forty-two thousand, six hundred sixty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 1120711 2241422 3362133 4482844 5603555 6724266 11207110 13448532 16810665 22414220 33621330 67242660