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68163260 = 225111923709
BaseRepresentation
bin1000001000000…
…01011010111100
311202021001102012
410010001122330
5114422211020
610432550352
71455243464
oct404013274
9152231365
1068163260
1135527080
121a9b23b8
13111777b9
1490a4ba4
155eb67c5
hex41016bc

68163260 has 96 divisors (see below), whose sum is σ = 171763200. Its totient is φ = 22429440.

The previous prime is 68163257. The next prime is 68163269. The reversal of 68163260 is 6236186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68163269) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95786 + ... + 96494.

It is an arithmetic number, because the mean of its divisors is an integer number (1789200).

Almost surely, 268163260 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 68163260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85881600).

68163260 is an abundant number, since it is smaller than the sum of its proper divisors (103599940).

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

68163260 is a wasteful number, since it uses less digits than its factorization.

68163260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771 (or 769 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 68163260 is about 8256.1044082545. The cubic root of 68163260 is about 408.4919015787.

The spelling of 68163260 in words is "sixty-eight million, one hundred sixty-three thousand, two hundred sixty".

Divisors: 1 2 4 5 10 11 19 20 22 23 38 44 46 55 76 92 95 110 115 190 209 220 230 253 380 418 437 460 506 709 836 874 1012 1045 1265 1418 1748 2090 2185 2530 2836 3545 4180 4370 4807 5060 7090 7799 8740 9614 13471 14180 15598 16307 19228 24035 26942 31196 32614 38995 48070 53884 65228 67355 77990 81535 96140 134710 148181 155980 163070 179377 269420 296362 309833 326140 358754 592724 619666 717508 740905 896885 1239332 1481810 1549165 1793770 2963620 3098330 3408163 3587540 6196660 6816326 13632652 17040815 34081630 68163260