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68488588 = 2274771733
BaseRepresentation
bin1000001010100…
…00110110001100
311202212120200101
410011100312030
5120013113323
610443540444
71461100120
oct405206614
9152776611
1068488588
1135729543
121ab2a724
131125c8bc
14914b580
15602cdad
hex4150d8c

68488588 has 48 divisors (see below), whose sum is σ = 142055424. Its totient is φ = 28284480.

The previous prime is 68488583. The next prime is 68488603. The reversal of 68488588 is 88588486.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68488583) 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, 93070 + ... + 93802.

It is an arithmetic number, because the mean of its divisors is an integer number (2959488).

Almost surely, 268488588 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 68488588, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71027712).

68488588 is an abundant number, since it is smaller than the sum of its proper divisors (73566836).

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

68488588 is a wasteful number, since it uses less digits than its factorization.

68488588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862 (or 860 counting only the distinct ones).

The product of its digits is 3932160, while the sum is 55.

The square root of 68488588 is about 8275.7832257739. The cubic root of 68488588 is about 409.1407505723.

The spelling of 68488588 in words is "sixty-eight million, four hundred eighty-eight thousand, five hundred eighty-eight".

Divisors: 1 2 4 7 14 28 47 71 94 142 188 284 329 497 658 733 994 1316 1466 1988 2932 3337 5131 6674 10262 13348 20524 23359 34451 46718 52043 68902 93436 104086 137804 208172 241157 364301 482314 728602 964628 1457204 2446021 4892042 9784084 17122147 34244294 68488588