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68047130 = 2511635851
BaseRepresentation
bin1000000111001…
…01000100011010
311202001011010002
410003211010122
5114410002010
610430253002
71454251064
oct403450432
9152034102
1068047130
11354578a8
121a957162
1311136998
149074734
155e921a5
hex40e511a

68047130 has 16 divisors (see below), whose sum is σ = 122611104. Its totient is φ = 27190800.

The previous prime is 68047129. The next prime is 68047153. The reversal of 68047130 is 3174086.

It is a junction number, because it is equal to n+sod(n) for n = 68047093 and 68047102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8705 + ... + 14555.

It is an arithmetic number, because the mean of its divisors is an integer number (7663194).

Almost surely, 268047130 is an apocalyptic number.

68047130 is a deficient number, since it is larger than the sum of its proper divisors (54563974).

68047130 is a wasteful number, since it uses less digits than its factorization.

68047130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7021.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 68047130 is about 8249.0684322534. The cubic root of 68047130 is about 408.2597866522.

The spelling of 68047130 in words is "sixty-eight million, forty-seven thousand, one hundred thirty".

Divisors: 1 2 5 10 1163 2326 5815 5851 11630 11702 29255 58510 6804713 13609426 34023565 68047130