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68030586 = 23213307947
BaseRepresentation
bin1000000111000…
…01000001111010
311202000022102100
410003201001322
5114403434321
610430044230
71454151621
oct403410172
9152008370
1068030586
1135446428
121a949676
131112c2b0
14906c6b8
155e8c326
hex40e107a

68030586 has 48 divisors (see below), whose sum is σ = 159423264. Its totient is φ = 20842272.

The previous prime is 68030581. The next prime is 68030587. The reversal of 68030586 is 68503086.

It is a self number, because there is not a number n which added to its sum of digits gives 68030586.

It is not an unprimeable number, because it can be changed into a prime (68030581) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71365 + ... + 72311.

It is an arithmetic number, because the mean of its divisors is an integer number (3321318).

Almost surely, 268030586 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68030586, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79711632).

68030586 is an abundant number, since it is smaller than the sum of its proper divisors (91392678).

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

68030586 is a wasteful number, since it uses less digits than its factorization.

68030586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275 (or 1272 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 68030586 is about 8248.0655913978. The cubic root of 68030586 is about 408.2266978339.

The spelling of 68030586 in words is "sixty-eight million, thirty thousand, five hundred eighty-six".

Divisors: 1 2 3 6 9 13 18 26 39 78 117 234 307 614 921 947 1842 1894 2763 2841 3991 5526 5682 7982 8523 11973 12311 17046 23946 24622 35919 36933 71838 73866 110799 221598 290729 581458 872187 1744374 2616561 3779477 5233122 7558954 11338431 22676862 34015293 68030586