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68551230 = 23511316701
BaseRepresentation
bin1000001011000…
…00001000111110
311202222202121110
410011200020332
5120022114410
610445142450
71461450546
oct405401076
9152882543
1068551230
1135771610
121ab5aa26
1311282277
149166326
156041720
hex416023e

68551230 has 64 divisors (see below), whose sum is σ = 185296896. Its totient is φ = 16080000.

The previous prime is 68551229. The next prime is 68551243. The reversal of 68551230 is 3215586.

It is a super-2 number, since 2×685512302 = 9398542269025800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6880 + ... + 13580.

It is an arithmetic number, because the mean of its divisors is an integer number (2895264).

Almost surely, 268551230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68551230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92648448).

68551230 is an abundant number, since it is smaller than the sum of its proper divisors (116745666).

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

68551230 is a wasteful number, since it uses less digits than its factorization.

68551230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6753.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 68551230 is about 8279.5670176646. The cubic root of 68551230 is about 409.2654505930.

It can be divided in two parts, 685 and 51230, that added together give a palindrome (51915).

The spelling of 68551230 in words is "sixty-eight million, five hundred fifty-one thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 11 15 22 30 31 33 55 62 66 93 110 155 165 186 310 330 341 465 682 930 1023 1705 2046 3410 5115 6701 10230 13402 20103 33505 40206 67010 73711 100515 147422 201030 207731 221133 368555 415462 442266 623193 737110 1038655 1105665 1246386 2077310 2211330 2285041 3115965 4570082 6231930 6855123 11425205 13710246 22850410 34275615 68551230