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68000022 = 2323777779
BaseRepresentation
bin1000000110110…
…01100100010110
311201221202111100
410003121210112
5114402000042
610425250530
71453663536
oct403314426
9151852440
1068000022
1135425472
121a933a46
131111b3cc
1490614c6
155e8324c
hex40d9916

68000022 has 12 divisors (see below), whose sum is σ = 147333420. Its totient is φ = 22666668.

The previous prime is 68000021. The next prime is 68000039. The reversal of 68000022 is 22000086.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 3777779 = 68000022 / (6 + 8 + 0 + 0 + 0 + 0 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 67999959 and 68000004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68000021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1888872 + ... + 1888907.

It is an arithmetic number, because the mean of its divisors is an integer number (12277785).

Almost surely, 268000022 is an apocalyptic number.

68000022 is an abundant number, since it is smaller than the sum of its proper divisors (79333398).

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

68000022 is a wasteful number, since it uses less digits than its factorization.

68000022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3777787 (or 3777784 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 68000022 is about 8246.2125851812. The cubic root of 68000022 is about 408.1655542096.

The spelling of 68000022 in words is "sixty-eight million, twenty-two", and thus it is an aban number and an uban number.

Divisors: 1 2 3 6 9 18 3777779 7555558 11333337 22666674 34000011 68000022