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68274730060 = 22543463171467
BaseRepresentation
bin111111100101011111…
…011011010001001100
320112020011221122102221
4333211133123101030
52104311312330220
651210500225124
74634624426065
oct774537332114
9215204848387
1068274730060
1126a5633a249
121129509b1a4
136590b91074
14343983356c
151b98e199aa
hexfe57db44c

68274730060 has 48 divisors (see below), whose sum is σ = 147029008896. Its totient is φ = 26617010112.

The previous prime is 68274730003. The next prime is 68274730061. The reversal of 68274730060 is 6003747286.

It is a happy number.

It is a super-2 number, since 2×682747300602 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a junction number, because it is equal to n+sod(n) for n = 68274729989 and 68274730016.

It is not an unprimeable number, because it can be changed into a prime (68274730061) 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, 312447 + ... + 483913.

It is an arithmetic number, because the mean of its divisors is an integer number (3063104352).

Almost surely, 268274730060 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68274730060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73514504448).

68274730060 is an abundant number, since it is smaller than the sum of its proper divisors (78754278836).

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

68274730060 is a wasteful number, since it uses less digits than its factorization.

68274730060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171982 (or 171980 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 43.

The spelling of 68274730060 in words is "sixty-eight billion, two hundred seventy-four million, seven hundred thirty thousand, sixty".

Divisors: 1 2 4 5 10 20 43 86 172 215 430 463 860 926 1852 2315 4630 9260 19909 39818 79636 99545 171467 199090 342934 398180 685868 857335 1714670 3429340 7373081 14746162 29492324 36865405 73730810 79389221 147461620 158778442 317556884 396946105 793892210 1587784420 3413736503 6827473006 13654946012 17068682515 34137365030 68274730060