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68013886 = 2265712799
BaseRepresentation
bin1000000110111…
…00111100111110
311201222110111211
410003130330332
5114402421021
610425435034
71454052133
oct403347476
9151873454
1068013886
1135434926
121a93ba7a
1311124805
14906658a
155e873e1
hex40dcf3e

68013886 has 8 divisors (see below), whose sum is σ = 102067200. Its totient is φ = 33991488.

The previous prime is 68013877. The next prime is 68013899. The reversal of 68013886 is 68831086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1086 + ... + 11713.

It is an arithmetic number, because the mean of its divisors is an integer number (12758400).

Almost surely, 268013886 is an apocalyptic number.

68013886 is a deficient number, since it is larger than the sum of its proper divisors (34053314).

68013886 is a wasteful number, since it uses less digits than its factorization.

68013886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15458.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 68013886 is about 8247.0531706786. The cubic root of 68013886 is about 408.1932915668.

The spelling of 68013886 in words is "sixty-eight million, thirteen thousand, eight hundred eighty-six".

Divisors: 1 2 2657 5314 12799 25598 34006943 68013886