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68000845 = 5114328753
BaseRepresentation
bin1000000110110…
…01110001001101
311201221210121211
410003121301031
5114402011340
610425254421
71453666123
oct403316115
9151853554
1068000845
1135426050
121a934411
131111b8b3
149061913
155e835ea
hex40d9c4d

68000845 has 16 divisors (see below), whose sum is σ = 91092672. Its totient is φ = 48303360.

The previous prime is 68000839. The next prime is 68000879. The reversal of 68000845 is 54800086.

It is not a de Polignac number, because 68000845 - 25 = 68000813 is a prime.

It is a super-3 number, since 3×680008453 (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12012 + ... + 16741.

It is an arithmetic number, because the mean of its divisors is an integer number (5693292).

Almost surely, 268000845 is an apocalyptic number.

It is an amenable number.

68000845 is a deficient number, since it is larger than the sum of its proper divisors (23091827).

68000845 is a wasteful number, since it uses less digits than its factorization.

68000845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28812.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 68000845 is about 8246.2624867269. The cubic root of 68000845 is about 408.1672008703.

The spelling of 68000845 in words is "sixty-eight million, eight hundred forty-five", and thus it is an aban number.

Divisors: 1 5 11 43 55 215 473 2365 28753 143765 316283 1236379 1581415 6181895 13600169 68000845