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67681130 = 25111573919
BaseRepresentation
bin1000000100010…
…11101101101010
311201100120001112
410002023231222
5114311244010
610414350322
71451165036
oct402135552
9151316045
1067681130
1135227920
121a7bb3a2
131103920a
148dbb1c6
155e1da05
hex408bb6a

67681130 has 32 divisors (see below), whose sum is σ = 133781760. Its totient is φ = 24448320.

The previous prime is 67681129. The next prime is 67681139. The reversal of 67681130 is 3118676.

It is not an unprimeable number, because it can be changed into a prime (67681139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15311 + ... + 19229.

It is an arithmetic number, because the mean of its divisors is an integer number (4180680).

Almost surely, 267681130 is an apocalyptic number.

67681130 is a deficient number, since it is larger than the sum of its proper divisors (66100630).

67681130 is a wasteful number, since it uses less digits than its factorization.

67681130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4094.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 67681130 is about 8226.8541982948. The cubic root of 67681130 is about 407.5265116303.

The spelling of 67681130 in words is "sixty-seven million, six hundred eighty-one thousand, one hundred thirty".

Divisors: 1 2 5 10 11 22 55 110 157 314 785 1570 1727 3454 3919 7838 8635 17270 19595 39190 43109 86218 215545 431090 615283 1230566 3076415 6152830 6768113 13536226 33840565 67681130